junmar, Author at Comnet

COMNET Philippines was Awarded the ELV Systems for Golden Bay Restaurant

COMNET Philippines was Awarded the ELV Systems for Golden Bay Restaurant

COMNET Systems is thrilled to announce that we have secured Iconic Golden Bay Restaurant Rejuvenation project! This exciting opportunity is a testament to the hard work and dedication of our team, and we are eager to dive in and deliver outstanding results.

Golden Bay Restaurant, housed in a three-storey building. Golden Bay is one of the largest stand-alone restaurants in the Philippines with numerous exclusive function rooms, a main dining hall, and two banquet halls that can accommodate 1,000 guests. From hosting grand wedding celebrations to intimate get-togethers, the establishment has served it all. Read more:

The project involves designing and implementing of Closed-Circuit Television (CCTV), Public Address & Background Music (PABGM), Fire Detection and Alarm System (FDAS), Structured Cabling System (SCS), Wi-Fi Network, Private Automatic Branch Exchange (PABX), Smart TV Display, and Automated Parking System.

COMNET was Awarded a Contract at SGH Elective Care Centre and NDCS Building Phase 1

COMNET was Awarded a Contract at SGH Elective Care Centre and NDCS Building Phase 1

COMNET Systems was awarded a communication and security cabling system project at Singapore General Hospital Elective Care Centre and NDCS Building Phase 1. The Building is expected to be ready in 2026

The ECC and NDCS building is design and build to meet the growing need of Singapore Healthcare and we are glad to be part of it.

The new SGH ECC will be a dedicated facility for scheduled surgeries and procedures for disciplines such as Orthopaedic, Ear, Nose & Throat, Head & Neck, and Breast surgeries.

The new NDCS will integrate digital dentistry and technology into its services to improve care delivery and clinical outcomes, and enhance the patient experience. NDCS’ co-location with the SGH ECC will give patients with complex conditions more accessibility between the two centres.

COMNET is in the Philippines

COMNET is in the Philippines

As part of our continued growth and expansion plan, we are proud to officially announce the opening of our new office in the Philippines on 26 April 2023.

This strategic expansion represents a significant milestone in our journey towards global growth and reinforces our commitment to serving our clients and customers on an international scale. The decision to establish an overseas office stems from our dedication to providing exceptional products/services and meeting the evolving needs of our global clientele. With the new office, we aim to bring our expertise closer to the Philippines market and capitalize on the numerous opportunities that this vibrant region offers.

We extend our gratitude to our clients, partners, and employees who have supported us throughout this journey. We look forward to strengthening existing relationships and forging new ones as we embark on this exciting chapter.

For more information about our services and the new overseas office, please visit our website or contact us as per the details below

Comnet Systems Integration Inc.
Suite 902 Shaw Tower
St. Francis Wack-wack Greenhill
City of Mandaluyong, Second District
NCR, Philippines, 1550

Joseph Parinas
General Manager (Sales)
Tel        : +63 2 85247088
Email   : joseph.parinas@comnet.ph
SEC      : 2023040096148-30

5 Types of Common Uninterruptible Power Supplies in Singapore

5 Types of Common Uninterruptible Power Supplies in Singapore

Introducing the UPS

A UPS is a device that provides emergency power to a load (such as a computer, server, or other critical electrical equipment) when the input power source or mains power fails. In other words, it is a backup battery system that keeps the connected equipment running for a limited yet substantial amount of time during a power outage.

A UPS has many components, but in its most basic form it would generally consist of a battery, a rectifier, an inverter, and a control unit. When the mains power is stable, the rectifier converts the Alternating Current (AC) input to Direct Current (DC), which is then stored in the battery. When a power failure happens, the inverter in the UPS takes over and converts the stored DC power back to AC to supply the connected equipment with the power that it needs. The control unit manages the charging of the battery and the switchover between the mains power and the battery power.

UPS devices can provide a plethora of benefits to users, including protection against any unpredictable power outages and voltage fluctuations, protection against data losses and corruption, as well as vastly improved equipment reliability and uptime. They can also be used as a means of providing power conditioning and surge protection, while helping to ensure the safety and longevity of connected equipment. UPS devices are commonly used in data centres, telecommunications facilities, and other environments where equipment failure or data loss can have deleterious ramifications and should be avoided at all costs.

UPS devices can function perfectly well as stand-alone units, but in many cases they are instead integrated into larger power protection and backup systems, especially in situations of a larger and more complex scale. Here is a list of the 5 most common types of UPS in Singapore, as well as their various defining characteristics.

  • Line-interactive UPS
  • Standby UPS
  • Standby-ferro UPS
  • Double-conversion online UPS
  • Delta conversion online UPS

1. Line – Interactive UPS

A line interactive UPS is an extremely common device used to provide uninterruptible power supply in Singapore, and provides power protection against power outages and voltage fluctuations. It works by continuously monitoring the incoming AC voltage and, if necessary, regulates it to a stable level. Unlike an offline UPS, a line interactive UPS is capable of providing some level of voltage regulation without switching to battery power. This makes it a good choice for applications that require power protection with a lower budget or for those that need to keep their devices running for a short time during a power outage

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2. Standby UPS

A standby UPS is a type of power backup system that provides basic power protection against short outages and brownouts. It works by switching to battery power when the incoming AC voltage drops below a certain level or fails completely. Standby UPS systems are typically less expensive than line interactive or double-conversion online UPS systems and are suitable for applications that require minimal power protection, such as home computers or small electronics. When the incoming AC power is stable, the battery is not in use and the equipment runs directly on AC power. Standby UPS systems are also known as “offline UPS” or “basic UPS”.

3. Standby-Ferro UPS

A standby ferro UPS functions similarly to the aforementioned standby UPS, but the term “ferro” refers to the use of a ferroresonant transformer in the UPS design, which provides voltage regulation and filtering. Standby ferro UPS systems are typically less expensive than other UPS devices like line interactive UPS systems, and are suitable for applications that do not require a lot of power protection or non-critical applications where 100% uptime is not needed. However, it is worth noting that this particular UPS is not very widely-used due to it being generally less efficient than the other options in this list.

4. Double – Conversion Online UPS

A double-conversion online UPS is a type of power backup system that provides the highest level of power protection and reliability. It works by continuously converting incoming AC power to DC power and then back to AC power. This double-conversion process ensures that the connected equipment receives clean, stable power at all times, even in the event of a power outage or voltage fluctuation. The online design means that the UPS is always providing power to the connected equipment, and the battery is used only as a backup in the event of a power failure. This type of UPS is commonly used in mission-critical applications, such as data centres, medical equipment, and financial systems, where any kind of downtime is avoided as much as possible. Here in Singapore uninterruptible power supply devices like these are widely used.

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Delta-Conversion Online UPS

The delta-conversion online UPS is a recently-developed UPS device designed to build upon the key defining features of the double-conversion online UPS, while making further improvements and refinements. While the load voltage of the delta conversion online UPS is always being supplied by the inverter, the addition of a second component – the delta converter – means that additional power is being contributed by the delta converter to the inverter output. In the event of an AC failure, this design will behave similarly to the double-conversion online UPS.

Summary

In conclusion, each of the 5 UPS devices mentioned above have their own key features, and each of them have their own use cases. For instance, if the equipment in question is of critical usage and requires constant uptime without any issues, it is thus advisable to consider utilising either double-conversion online UPS devices or the newer delta-conversion online UPS devices, due to their ability to provide stable power at all times with minimal fluctuation. On the other hand, if cost is a significant constraint and the equipment in question does not require high levels of protection, then it would be better to consider more cost-effective UPS devices such as the standby UPS devices.

Overall, choosing suitable uninterruptible power supplies and devices will ultimately depend on your use case and the individual requirements of the equipment being used.

COMNET has a New Logo

COMNET has a New Logo

Comnet has grown and evolved since we launched our current logo about 20 years ago, and we felt it was time for a brand refresh to reflect who we are today as we usher ourselves into the future.

Over the past few months, we have collaborated with a design consultancy firm to craft our brand identity that represents our business and vision to becoming a leading ICT integrator in Singapore and beyond.

The new logo draws inspiration from “Connection”, using dots and lines as point of connection to form a globe-shape logo. This semiotically presents Comnet to the world and signifies our commitment to deliver excellence service and be connected to our clients, employees, and our business partners.

As for the font, we have chosen the Matteo font which is clean and solid. It symbolizes stability and strength build on the solid foundation of values and beliefs in our organization. The new font is also sharp which represents our continuous effort to provide businesses with the right products that are both innovative and cutting-edge

The Complete Guide of Uninterruptible Power Supply (UPS)

The Complete Guide of Uninterruptible Power Supply (UPS)

WHAT IS A UPS POWER SUPPLY?

UPS is an uninterruptible control supply in Singapore designed to be used as an auxiliary control source to successfully and instantly switch battery boosters for computers and other memory-based devices as needed. Personal computers, also known as PCs, are packed with important but damaged computer components that are often unable to cope with damage caused by sudden loss of control. The quality plan of the uninterrupted control supply system is used to protect them and protect information in the event of power outages, network surges, and any disappointment or atypical control situations. In this article, we’ll be sharing information about UPS right from the horses’ mouth – a professional and competent uninterruptible power supply company in Singapore – Comnet Systems!

 

uninterruptible power supplies model

As additional peripherals in the configuration of home and work PCs, servers and arrays, and other computer hardware applications, UPS units are becoming increasingly popular. In this case, the uninterruptible power supplies provide computer customers with additional peace of mind and an additional level of information and equipment security.

In this UPS battery system guide, we will examine exactly the functions of UPS and how they can help protect expensive and sophisticated high-end computer components from the potentially damaging effects of sudden main power failures, power surges, and other causes. Shut down unexpectedly. We will also explore more different types of UPS power supplies on the market today to help you decide which types to focus on when purchasing UPS.

A quick side note on naming conventions: In the technical hardware context, the acronym UPS stands for Uninterruptible Power Supply. Technically speaking, the “UPS power supply” is a convenient example of the RAS syndrome and a PIN code and an LCD screen. However, it is still a very common term among customers and suppliers, and the purpose of this guide is that we will use both stand-alone acronyms and the longer version of the interchangeable.

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VRLA or lead-acid batteries often require fairly low maintenance and are generally considered to be the basic and reliable workhorse of Uninterruptible Power Supplies, with a typical service life of 5 years. The “VR” in VRLA stands for valve control, which means that some VRLA batteries have a built-in ventilation system that can operate automatically to control the release of gas that accumulates at certain points in the battery charge and discharge cycle. This important function is triggered by an internal pressure sensor. Like most aspects of the VRLA type, it works best when the battery is kept in a dry, temperature-controlled environment, such as a common central heating room in a home or office

In contrast, UPS Li-ion batteries are generally more compact and lightweight, and can have a number of built-in power management features, such as early charging and voltage balancing to get started. Many brands also provide a longer life than lead-acid batteries. In general, which means that in sufficient time, they can eventually provide similar inexpensive options. However, in the initial stage, UPS devices equipped with lithium batteries tended to be more expensive, reflecting a significant increase in production costs. For VRLA-based devices, the initial purchase is usually cheaper.

There is a third option for UPS batteries, namely “wet or flooded batteries” or VLA types. These are much less useful as options that can be bought on the street or in standard UPS systems because they are suitable for very specific applications and environments. On the one hand, their chemical makeup means that they are dangerous unless kept in a completely separate battery storage safe, and they also require regular maintenance by the user to supplement the level of distilled water and continuously monitor their balance and calibration data. This will make VLA batteries completely impractical for most home users or even most office environments. Wet batteries can provide obvious benefits in certain specific use cases, such as large server centers. In these use cases, excellent long-term reliability and stability is the key requirement or fact superior to convenience.

In addition to the battery and the case itself, the UPS power supply often includes a number of other useful functions, which are highly dependent on the device model. The elements that are included:

  • Advanced on board performance monitoring software
  • Management card slots and other data reading functionality
  • Deep discharge, power surge, low voltage and/or  temperature protection
  • LCD or OLED display screens and readout panels
  • Graphical calibration interfaces
  • A broad range of connectivity and external hard Input/output expander options
  • Variable numbers of power sockets and outlets
  • ‘Hot swappable’ battery replacement and/or live UPS maintenance options
  • Various IP ratings

WHAT DOES A UPS DO, AND HOW DOES IT WORK?

uninterruptible power supply company in Singapore model

As noted in the introduction to this guide, the primary function of the UPS is, first and foremost, to provide a constant and temporary power source for computer setup or other important hardware fixes – in this case, a power outage or similar power outage. Most importantly, UPS is not intended to provide long-term backup use for connected equipment when there is no power supply. The UPS device is not designed to provide a battery-powered solution to continue working “off the grid” or surfing the Internet.

In the case of a sudden disconnection of the normal power supply, the goal of the UPS unit is to provide a limited time window in which the user can still perform a controlled shutdown of the related equipment. The response grid is no longer available. We will study exactly how it works in a later part. An extremely simplified version is that the UPS’s power source collects and stores some energy drawn from the wall socket and stores it in its built-in battery, and then sends the rest of the energy to the computer normally.

When the current from the main plug suddenly stops due to any reason, usually in the case of a power failure, it is also due to accidental disconnection of the cable. The UPS can immediately switch to sending backup power stored in its internal battery.

 

HARDWARE DAMAGE VS DATA LOSS

The point of all this is that if for some reason the main power circuit is suddenly disconnected, the UPS can protect vulnerable and expensive hardware components from damage to memory and physical infrastructure. Arguably most importantly, installing a UPS device also means that important data will not be lost or damaged due to a total power outage during transmission.

For most daily PC activities, the risk of permanent data loss or errors in the event of an unexpected process interruption is actually quite high, so there is usually an approved shutdown procedure for almost all types of activities. data transmission. It’s as easy as removing a USB memory stick from a laptop, you must click eject to safely remove it.

Conversely, if you simply remove the peripheral device from its slot at the moment when the last photo or document appears to have been successfully transferred, the PC may not have finished writing all the data required to make it fully readable by both parties. In the future. In the worst case, this may cause the device to be unable to read the file at both ends of the transfer process. Data damaged or damaged in this way can sometimes still be rescued by specialized recovery technicians, unless they cannot repair or restore it, otherwise it will be lost forever.

This is one of the key reasons to always keep a backup of your important files. It only applies to your data, which is generally saved in a format designed to move as you wish. Rather, each time the computer is turned on and running, a more thorough background transfer process will continue to occur at the hardware and operating system levels. Many of these are the absolute key to the operational capabilities of the machine. In the event of a sudden power failure, it is the disruption of these core processes. Even a simple desktop computer can cause irreversible damage. This is the purpose of the UPS power.

TYPES OF UPS POWER SUPPLY

As we mentioned earlier in this guide, there are many different types of UPS systems on the market today. No matter which model or brand you ultimately choose, you will find that it provides a wide range of different features and settings, from numerous connection interfaces to built-in displays, software management packages, and more.

However, these additional features should not be confused with the important issue of choosing the correct UPS core type. Fortunately, the choice basically boils down to a few key variants. In this section, we will discuss each major type one by one and try to determine the UPS power supply that best suits your hardware configuration and operating requirements.

ONLINE UPS

An online UPS system can be considered the best choice for most usage scenarios-it is usually the most expensive type of UPS power supply, providing the best security against unexpected power fluctuations or sudden power failures. As you might expect, the term “online UPS” has nothing to do with Internet connections. On the contrary, it is a fully online UPS power supply, known as a “true UPS”, which means that it can continuously filter, store, and deliver current to your PC even when all conditions are normal.

In short, online UPS is always performing its designed tasks, rather than performing operations only when necessary, which of course means that in the event of a sudden power failure, as far as the computer is concerned, there is a real zero interruption worry, cleanliness, stable power supply continues, as if nothing happened. Although from a hardware or data point of view, this provides the most seamless and secure option to date for the protection of computers and their components, it also means that the power consumption and operating costs of this type of unit UPS are very high. Not to mention the significantly higher cost of the technology itself.

This can be of considerable value in certain key functions and environments where any performance or data loss will be catastrophic, but for most home users this can be considered excessive. In other words, while online UPS systems used to be extremely expensive investments for high-end business networks only, in recent years they have become more important for enthusiastic home users who want the most comprehensive protection for their systems and files.

OFFLINE/STANDBY UPS

Compared to the version described above, the offline or backup UPS is exactly what you imagine from the name. It is not constantly cycling, storing and converting power to a computer or server, but is “idle” until absolutely necessary. In fact, whenever the backup UPS detects that the current in the wall outlet is normal, it will effectively bypass itself. By the time the issue is detected, for most premium models and brands, typically within 5 milliseconds, the offline UPS power will switch to its internal backup battery.

Although these 5 milliseconds are typically within the tolerance of most consumer and home electronics products, it still counts as a very minor “outage”. This is the reason why professional users do not technically consider offline models as “real” UPS devices. However, for most home desktop PC users, they are often full-featured alternatives and are only considered unsuitable for very critical applications, where any risk of data or hardware loss is unacceptable.

HYBRID/LINE-INTERACTIVE UPS

Based on the above definitions, you will find that hybrid UPS systems generally include so-called “online interactive” UPS units, which provide some kind of compromise and an effective balance between cost and performance, which is not surprising. The online UPS supplies power continuously through its battery cycle, while the backup UPS system only switches to battery power when a problem is detected, while the hybrid or line-interactive UPS power supply provides various operating modes. These typically include double conversion mode, economy mode and active filter mode; the hybrid UPS can detect the most suitable mode at any time. This method is achieved through a variable power transformer system, which means that the total power consumption during any typical extended use period is much less than the full online equivalent.

In addition, the interactive UPS is more effective than the offline version in monitoring, managing and adjusting changes in traffic in the event of “power outages” that are more common than complete power outages. Hybrid mode will not have to constantly switch between full or battery power, which means that the long-term health of the battery is greatly increased and further reinforces the overall value proposition of the online interactive UPS.

WHICH UPS SHOULD YOU BUY?

Find the right model, brand, and the size or capacity of  the UPS for your needs. There are a few key factors to take into consideration. Regardless of whether you have opted for an online, staby or the hybrid type UPS power supply. These are the main points:

  1. The type of circuit protection you need
    • Blackout protection
    • Brownout protection
    • Surge protection
    • Over-voltage protection
    • Under-voltage protection
    • Deep discharge protection
    • Harmonic distortion protection
    • Frequency variation protection
  2. The amount of UPS power needed
    • How many devices are you going to use?
    • What is the combined total power draw?
  3. How long you need to be able to run those devices for the event of a black out
    • Runtime of a UPS will depend on the size of its battery
    • How many devices that the battery is being asked to support
    • You need to find the bare minimum amount of time you would need to access your computers (finish or stop and save any active processes and shut down it properly)

When purchasing a UPS system, other factors to consider are generally not as important as the factors listed above, but can still affect your purchasing decision. Include the appearance of the device, the overall physical size and shape, and where your home or office would be located for optimal access and security.

 

What Are Uninterruptible Power Supplies?

What Are Uninterruptible Power Supplies?

A Power Supply That Isn’t Interruptible (UPS). When purchasing a computer, it is one of the most significant purchases you can make. It not only safeguards your hardware investment, but it also eliminates data loss, boosting user productivity.

When it comes to a business, it is not just UPS for a computer. Rather, it is UPS for the entire server, or rows of servers! It’s a reality of life that Mother Nature will have her moments. When the electrical current to your device is not constant, it can cause serious problems with your computers and home entertainment systems. Blackouts, brownouts, noise, spikes, and power surges are all common voltage problems.

PURCHASING A UPS

Let’s establish what an Uninterruptible Power Supply in Singapore is and how it works before we identify the concerns linked to voltage irregularity. A UPS is a device that delivers reliable backup power in the event of a power outage. By regulating the power coming through, the UPS can protect both data and the computer equipment linked to it. A UPS is available in a variety of sizes and models to suit various types of equipment. The UPS, surge suppressor, and SPS are only a few of them. Knowing which one to use is critical for the safety of the equipment you’re using.

DIFFERENT KINDS OF POWER ISSUES

A UPS, as previously stated, safeguards against common electrical current problems.

BLACKOUT

Often known as a “power cut,” can occur when a transformer is broken or when a power line is downed. When instances like this arise, software advancements have increased with time. If you used earlier versions of Windows 95 or 98, you may recall that when you turned on your computer after a power outage, it ran a diagnostic test. Windows now recovers from events more easily thanks to the introduction of Windows NT and its journaling file system.

BROWNOUT

This occurs when electrical circuits are overloaded. When a lot of electrical equipment is connected and in use at the same time, a brownout can occur, resulting in a power outage. The problem normally only lasts a few minutes, but it can harm your device.

NOISE

Commonly caused by interference from lightning and generators; resulting in unclean power going to your devices. It can cause the operating system and applications to malfunction and possibly corrupt files.

SPIKE

An abrupt spike in voltage that lasts only a few seconds. Lightning or the restoration of power after a major outage are two common explanations. When this happens, I usually unplug all of my electrical appliances. When the power comes back on, I wait a few minutes for the voltage to recover to normal before reconnecting the equipment. If there will be a planned outage for maintenance, several power companies will tell you.

A power surge occurs when a domestic equipment, such as a refrigerator or air conditioner, causes a significant spike in voltage. Surges are only present for a brief period of time, yet they can cause considerable damage to computer components.

WHAT HAPPENS IF YOUR EQUIPMENT ISN’T PROTECTED?

You’ll notice that a lightning storm is frequently the highest threat to your equipment in the descriptions of these different voltage disruptions. What precisely does lightning do to your equipment that makes it dangerous? When lightning strikes a transformer, it can cause a tremendous surge that runs through the wiring to your home in an instant. The surge travels from the outlet or data wires to your PC. The motherboard is frequently the first component to fail in a computer. This effect can also cause a cascade of additional voltage problems, resulting in damage to other components in your computer, such as the hard drive and RAM.

SELECTING THE BEST PROTECTION

When it comes to protecting your equipment, there is no one-size-fits-all kind of uninterruptible power supply solution. There are numerous solutions on the market that cater to various situations, such as a house, an office, or a huge data center. Here’s a rundown of what to look for when buying a home UPS.

  • Surge suppression that filters out faulty electricity that could damage equipment in its entirety.
  • To check that your equipment is properly grounded, use a site wiring fault indicator.
  • Data corruption is prevented through noise filtration.
  • In the event of a power loss, the backup power is available immediately.
  • Up to eight outlets for various equipment are supported. I always keep two computers on; some UPS equipment includes a battery backup in addition to surge protection, while others only have surge protection. In situations like this, I’ll just connect the UPS’s battery ports to the most critical devices.
  • Other devices, such as a network, serial port, and data connections, should be protected by your UPS.
  • A battery replacement indicator, battery management, and intelligent features such as automated save and shutdown are all things to look for. This feature may only be accessible on more expensive models.
  • Because a UPS is such a large investment, make sure it comes with a lifetime warranty. I’ve had a UPS since 2005, and when the battery expired a few years ago, I was able to purchase a replacement for a fraction of the price of buying a new one.

Home computing has progressed throughout time, and some customers now own a home server as well as other devices such as a Network Attached Storage (NAS) device. Investing in a UPS for such arrangements will necessitate further investigation into your specific requirements. The most obvious is the requirement for a more powerful UPS capable of meeting the demands.

A media server functions in the same way as a file server in an office. They’re always saving, retrieving, or processing data, such as streaming to your smart TV or mobile devices. If a power outage happens, such situations can result in catastrophic data loss. For such setups, you should first consider purchasing a UPS that has capabilities like battery replacement, hot battery swapping, and intelligent battery functions. Integration with your backup software is another feature of the UPS you should consider.

POWER MANAGEMENT AND UNATTENDED SHUTDOWN

A UPS will protect your equipment from damage, but knowing when such incidents will occur is usually beyond your control. You might return to your home office too late to fully shut down your PC after a quick trip to the kitchen to cook a sandwich. Data loss can be avoided by having the ability to gracefully shut down. These functions are frequently included in the software that comes with your UPS. When making your purchase, make sure to look for the following features:

  • Shutdown by itself
  • Notification of a power outage to the user
  • Shutdown commands that can be customized
  • Mode of conservation.
  • Replacement of the battery is required.
  • Status display, runtime, event log, and remote management through the web or a remote computer are some of the management features available.
  • Temperature and humidity in the environment

HOW TO USE YOUR UPS BACKUP CORRECTLY

It’s critical to get the most out of your UPS. I’ll admit that I’ve been a little naive about this at times. Some users may feel that having a UPS means that the fun never ends, that you may keep playing, listening to music, or simply leave the computer on standby. No way. What you should do is take advantage of the chance to gently shut down the equipment. Some UPS devices can offer backup power for up to one hour. Use this time to turn off and unplug all of your gadgets.

An uninterruptible power supply (UPS) is not a guardian angel for all gadgets. A printer is one equipment that should never be plugged into a UPS. This may cause the printer motor to overheat. Any jobs that need to be printed will be queued by a printer. It usually resumes printing after the power is restored. A basic surge protector should suffice.

Computing equipment is a significant investment, therefore safeguarding it should be a primary priority. A UPS, thankfully, can assist protect your equipment from both man-made and natural disasters.

SURGE PROTECTORS: WHAT ARE THEY?

At the very least, a surge protector should be connected to your computer and home entertainment equipment. Surge protectors do not supply backup power, but they do safeguard your equipment from damage.

If you wish to know more about uninterruptible power supply for your business, contact Comnet to find out more!

CCTV System

CCTV System

Security Camera Range: Factors to Consider

Having your security cameras in the right place is just as important as having them. If your cameras are in the wrong place, you may lose out on getting evidence of important events. When you are determining camera placement, you should think about how far they will be able to see. Placing them too far from the area of interest will prevent you from capturing clear footage, but you will not be able to cover a lot of area if you place them too close. A typical home security camera can see within a range of 0-70 feet, but there are other factors that can affect this range. In this post, we will go over some things that affect security camera range so that you can figure out the optimal placement.

Factors That Affect Security Camera Range

Focal Length & Field of View

 

Focal length refers to the size of the security camera lens and this affects your camera’s field of view. Field of view and range are often confused with each other, but range is how far a camera can see while field of view is how much, or how wide, it can see. A smaller focal length will cause a wider field of view, but objects will appear smaller and more distant from the camera. So, you will be able to capture more, but what is captured will be less detailed and fuzzy. A bigger focal length will cause a narrower field of view, but objects will look bigger and closer to the camera.

 

Resolution

A wider field of view does allow you to see more things, but it sacrifices image quality. That is why resolution is another deciding factor in the range of your security camera. Resolution refers to how many pixels make up your image. The higher the resolution, the more pixels that are in an image. More pixels means that your images will be clearer and more detailed. A low-resolution camera will produce images that appear blurry or pixelated. Having a higher resolution means that you will be able to see more details, even if the object is far away.

 

Location & Distance

This one seems obvious, but where you place your security cameras will affect their range. The further away you place your camera from the area of interest, the harder it will be to capture details. Additionally, you want to make sure that nothing is blocking the camera’s line of sight. If there is any obstructions, like a tree or wall, the camera won’t really be monitoring anything of interest. But besides that, obstructions will make a wireless camera’s signal strength weaker and affect the image quality.

BENEFITS OF IP OVER ANALOG CCTV SYSTEMS

There are two different types of CCTV systems: IP and analog. Even though analog systems are older, advances in technology have greatly improved their performance over the years. Now, you can get high-quality analog systems for about the same price as IP systems. But despite the improvements, there are still areas where IP prevails over analog CCTV systems.

DIFFERENCE BETWEEN IP AND ANALOG

It is a common misconception that the difference between IP and analog systems is that IP systems are connected to the internet while analog systems are not. This results in a lot of people falsely claiming that analog systems are not capable of remote access since they are not connected to a network. While it is true that IP systems depend on a network connection, newer analog systems can be connected to the internet for remote access as well.

The real difference between these two CCTV systems is the way data is converted and transferred. Analog systems depend on the DVR to convert the video signals into digital video. With IP systems, the IP camera has an internal sensor that already records images in digital video, so a DVR is not needed. Additionally, the data transmission is done through the network instead of over coaxial cables.

 

USING IP OVER ANALOG CCTV SYSTEMS POE

One special advantage of using IP over analog CCTV systems is their ability to use PoE (Power over Ethernet). With analog systems, each camera needs to have 2 different cables that are connected to 2 separate things. 1 cable is a coaxial cable that is connected to the DVR for data transmission while the other is a power cable that is connected to a power supply to send power to the camera. IP cameras have the option of using PoE. This means that each camera will only need to be connected to one device via Ethernet cables that can transmit both power and data. Using PoE offers more flexibility when it comes to installation because there is less cables to handle.

VIDEO RECORDER INDEPENDENCE

Analog systems rely on the connected DVR to convert the video signals into digital video and for storage. IP cameras can be connected to a video recorder called an NVR, but the sole purpose of the NVR is to just store footage, not to convert signals. All the digitization occurs on the IP camera before the data even reaches the NVR. Unlike analog cameras, IP cameras are independent from the video recorder so they can work by themselves. Using IP over analog CCTV systems means more options when it comes to storage. If the user does not want to use an on-site NVR, then the IP camera can send digitized footage directly to the internet instead.

VIDEO ANALYTICS

Another important advantage of using IP over analog CCTV systems is that they can support intelligent video analytics. Since IP cameras already record images in digital video, it is easier for footage to be analysed and manipulated. Analog cameras can use video analytics as well, but they have more limitations; analog cameras need a separate device to convert video signals to digital which means that it is more difficult to manipulate footage without causing image distortion.

 

SCALABILITY

Analog systems are simple to configure when it comes to setup, but they are limited when it comes to expansion. Analog systems require each analog camera to be directly wired to both a power supply and the DVR. This means that the number of cameras you can connect is limited by how many ports on the DVR you have. Additionally, you would have to make sure that all the devices are connected to each other and in the same vicinity, meaning less installation options. IP cameras will only need one cable if you use PoE and you have more flexibility when it comes to setting up. IP cameras can be connected to single switch with additional ports and do not need to be directly connected to an NVR.

WRAP UP

Analog systems have come a long way since they were first introduced, but there are still a lot of advantages of using IP over analog CCTV systems. IP systems can use video analytics and they offer more flexibility in terms of expansion and installation. Analog systems are still good if you want a simple setup without any fancy features but going with an IP system would be the ideal choice for those who want more out of a security system.

Quality

Another deciding factor in the range of your security camera is the quality. A camera’s specifications may be like another camera, but that does not mean that they are the same quality and will perform the same way. If you are looking for security cameras that will give you the best performance, you should aim to purchase from reputable and reliable dealers. Not only will they provide you with the highest quality products, but they will also be there to assist you on your CCTV installation every step of the way. If you are ready to get started on your new CCTV system, give us a call today, Comnet Sales Team would be happy to help you out. 

 

Wireless Network Solution

Wireless Network Solution

Wi-Fi 6: is it Really that much faster?

Wi-Fi is about to get faster. Faster internet is constantly in demand, especially as we consume more bandwidth-demanding apps, games, and videos with our laptops and phones.

But the next generation of Wi-Fi, known as Wi-Fi 6 is not just a simple speed boost. Its impact will be more nuanced, and we are likely to see its benefits more and more over time.

This is less of a one-time speed increase and more of a future-facing upgrade designed to make sure our speeds do not grind to a halt a few years down the road.

WHAT IS WI-FI 6?

Wi-Fi 6 is the next generation of Wi-Fi. It will still do the same basic thing — connect you to the internet — just with a bunch of additional technologies to make that happen more efficiently, speeding up connections in the process.

HOW FAST IS IT?

The short but incomplete answer: 9.6 Gbps. That is up from 3.5 Gbps on Wi-Fi 5.

The real answer: both of those speeds are theoretical maximums that you are unlikely to ever reach in real-world Wi-Fi use. And even if you could reach those speeds, it is not clear that you would need them. The typical download speed in the US is just 72 Mbps, while in Singapore with the average download speed of 42.5 Mbps that would translate or less than 1 percent of the theoretical maximum speed.

But the fact that Wi-Fi 6 has a much higher theoretical speed limit than its predecessor is still important. That 9.6 Gbps does not have to go to a single computer. It can be split up across a whole network of devices. That means more potential speed for each device.

WI-FI 6 ISN’T ABOUT TOP SPEEDS

Instead of boosting the speed for individual devices, Wi-Fi 6 is all about improving the network when a bunch of devices are connected. That is an important goal, and it arrives at an important time: when Wi-Fi 5 came out, the average US household had about five Wi-Fi devices in it. Now, homes have nine Wi-Fi devices on average, and various firms have predicted we’ll hit 50 on average within several years.

Those added devices take a toll on your network. Your router can only communicate with so many devices at once, so the more gadgets demanding Wi-Fi, the more the network overall is going to slow down.

Wi-Fi 6 introduces some new technologies to help mitigate the issues that come with putting dozens of Wi-Fi devices on a single network. It lets routers communicate with more devices at once, lets routers send data to multiple devices in the same broadcast, and lets Wi-Fi devices schedule check-ins with the router. Together, those features should keep connections strong even as more and more devices start demanding data.

DEVICES ARE MORE LIKELY TO MAINTAIN FAST SPEEDS ON BUSY NETWORKS

The story starts to change as more and more devices get added onto your network. Where current routers might start to get overwhelmed by requests from a multitude of devices, Wi-Fi 6 routers are designed to more effectively keep all those devices up to date with the data they need.

Each of those devices’ speeds will not necessarily be faster than what they can reach today on a high-quality network, but they are more likely to maintain those top speeds even in busier environments. You can imagine this being useful in a home where one person is streaming Netflix, another is playing a game, someone else is video chatting, and a whole bunch of smart gadgets — a door lock, temperature sensors, light switches, and so on — are all checking in at once.

The top speeds of those devices will not necessarily be boosted, but the speeds you see in typical, daily use likely will get an upgrade.

Exactly how fast that upgrade is, though, will depend on how many devices are on your network and just how demanding those devices are.

A WI-FI 6 ROUTER IS REQUIRED

Instead, new devices will start coming with Wi-Fi 6 by default. As you replace your phone, laptop, and game consoles over the next five years, you will bring home new ones that include the latest version of Wi-Fi.

There is one thing you will have to make a point of going out and buying, though: a new router. If your router does not support Wi-Fi 6, you will not see any benefits, no matter how many Wi-Fi 6 devices you bring home. (You could see a benefit, though, connecting Wi-Fi 5 gadgets to a Wi-Fi 6 router, because the router may be capable of communicating with more devices at once.)

Again, this is not something worth rushing out and buying. But if your home is packed with Wi-Fi-connected smart devices, and things start to get sluggish in a couple years, a Wi-Fi 6 router may be able to meaningfully help.

WHAT MAKES WI-FI 6 FASTER?

There are two key technologies speeding up Wi-Fi 6 connections: MU-MIMO and OFDMA.

MU-MIMO, which stands for “multi-user, multiple input, multiple output,” is already in use in modern routers and devices, but Wi-Fi 6 upgrades it.

The technology allows a router to communicate with multiple devices at the same time, rather than broadcasting to one device, and then the next, and the next. Right now, MU-MIMO allows routers to communicate with four devices at a time. Wi-Fi 6 will allow devices to communicate with up to eight.

You can think of adding MU-MIMO connections like adding delivery trucks to a fleet, says Kevin Robinson, marketing leader for the Wi-Fi Alliance, an internationally backed tech-industry group that oversees the implementation of Wi-Fi. “You can send each of those trucks in different directions to different customers,” Robinson says. “Before, you had four trucks to fill with goods and send to four customers. With Wi-Fi 6, you now have eight trucks.”

The other new technology, OFDMA, which stands for “orthogonal frequency division multiple access,” allows one transmission to deliver data to multiple devices at once.

Extending the truck metaphor, Robinson says that OFDMA essentially allows one truck to carry goods to be delivered to multiple locations. “With OFDMA, the network can look at a truck, see ‘I’m only allocating 75 percent of that truck and this other customer is kind of on the way,’” and then fill up that remaining space with a delivery for the second customer, he says.

In practice, this is all used to get more out of every transmission that carries a Wi-Fi signal from a router to your device.

WI-FI 6 CAN ALSO IMPROVE BATTERY LIFE

Another new technology in Wi-Fi 6 allows devices to plan out communications with a router, reducing the amount of time they need to keep their antennas powered on to transmit and search for signals. That means less drain on batteries and improved battery life in turn.

This is all possible because of a feature called Target Wake Time, which lets routers schedule check-in times with devices.

It is not going to be helpful across the board, though. Your laptop needs constant internet access, so it is unlikely to make heavy use of this feature (except, perhaps, when it moves into a sleep state).

Instead, this feature is meant more for smaller, already low-power Wi-Fi devices that just need to update their status every now and then. (Think small sensors placed around a home to monitor things like leaks or smart home devices that sit unused most of the day.)

WI-FI 6 ALSO MEANS BETTER SECURITY

Current devices and routers can support WPA3, but it is optional. For a Wi-Fi 6 device to receive certification from the Wi-Fi Alliance, WPA3 is required, so most Wi-Fi 6 devices are likely to include the stronger security once the certification program launches.

HOW DO I GET WI-FI 6?

Devices supporting Wi-Fi 6 are just starting to trickle out. You can already buy Wi-Fi 6 routers, but so far, they’re expensive high-end devices. A handful of laptops include the new generation of Wi-Fi.

Does your Network Wifi-6 Ready? Call us today, Comnet Sales Team would be happy to help you out. 

Access Control Systems

Access Control Systems

What is physical security?

Physical security has traditionally been viewed as an unsexy and tedious topic that few want to tackle; however, everyone knows that safety and security must be adequately addressed. From talking to endless lines of hardware store reps about installing door locks, to antiquated, dystopian visions of bored security guards in rooms with dozens of CCTV monitors— the label of physical security does not necessarily inspire passion. We are here to tell you that it does not have to be that way. With cutting-edge technology and the Internet of Things revolution, the world of physical security has drastically changed—making your physical once a safe space has never been easier.

If you are new to the world of physical access control, you might have some questions:

  • Components, what are the pieces of an access control system and how does it work?
  • Why Access Control, why do people choose access control?
  • Managing and Using, who manages the day-to-day aspects of the system?
  • Quote and Cost, how much should I spend on an access control system and what is a sample quote?

Setup and Operation, how do I set up an access control system?

What is physical access control?

An access control system allows you to manage, monitor and maintain who has access to certain doors and at what time they can access them. The simplest type of access control “system” is a standard deadbolt with a brass key.

Why do we need access control?

The purpose of access control is to provide quick, convenient access control for authorized persons while, at the same time, restricting access for unauthorized people. Beyond the obvious reasons, there are more reasons why access control should play a significant role in your organization. The standard form of today’s access control is an “access card,” instead of the key, to grant access to a secured area. For access to larger buildings, the exterior door is managed by the building and the interior, or tenant, door access is managed by the individual company. Some companies need to be compliant with health data regulations (HIPAA) or credit card data regulations (PCI) or even with cyber standards, such as SOC2. The ability to pull compliance reports for access control, on demand, is a huge benefit.

Compliance

If you’re working in a company on expensive products or sensitive data then you definitely want to control and monitor who enters your facility.

IP / Data

If you have a lot of visitors or clients coming to your space, you might be looking for a welcoming experience at the front door or front desk. Access control not only improves your operations but it’s modern and impressive for visitors to use.

Experience

Think about a small business located in a larger building: The company will use the access card provided by the landlord to get in the front door. However, it is often the case that the landlord is not responsible for the specific office security. Thus, the small business might wish to install their own access control on their doors, and a separate intrusion detection alarm in the office, along with one or more video cameras.

Credentials

This is your electronic “key” and it grants you access. It could be an access card, ID badge, ID card or smartphone-based mobile app that acts as an electronic key. People use one, or a combination of all three, to gain access through the doors that are secured by an access control system. The form of access cards is the same as credit cards, so it fits in your wallet or purse; however, demagnetization is very common with basic access control cards. The benefit of using mobile credentials is that they are personalized, so any unlock event can be tracked back to the person associated with the credential.

Card Reader

The card reader, mounted on the wall, electronically reads your credentials, and sends a request to unlock the door (using your user credentials) to a server. Typically, the type of cards used are proximity cards, which require the card to be held in a 2” to 6” proximity to the reader—as opposed to being inserted. Card readers are mounted outside of the perimeter (exterior non-secured wall) and next to the door they should be unlocking. In addition to card readers, some access control systems provide the option of using keypads (PINS) or biometrics, instead of cards or smartphones, as credentials. This is rather uncommon, since PINs can easily be passed on and biometrics are difficult to manage—especially if employees or visitors don’t want to share their fingerprint with your company.