HD-CVI vs HD-TVI vs HD-AHD: What is the Best HD Security Camera Type?

HD-CCTV (High Definition-Closed Circuit Television) is CCTV’s response to the IP cameras high definition image quality. This technology can transfer uncompressed high-definition video over point-to-point coaxial cables. The biggest advantage we saw at the advent of HD-CCTV was the fact that newer HD-CCTV cameras did not require cabling upgrades. The original coaxial cables from the CCTV era had enough unused data spectrums that they could be used for the new HD-CCTV cameras. This made it easy to install brand new cameras while not requiring to overhaul your entire cabling system. 


What is HD-AHD?

AHD CCTV is an analog high definition closed-circuit television video surveillance standard that benefits from existing coax cable to transmit 720p and 1080p video resolutions HD video from security cameras to DVRs. AHD is able to transmit up to 1080p video resolution (1920 x 1080) in an uncompressed format over the same standard coaxial cable that is used for standard CCTV cameras.

This uncompressed video format is able to transmit over longer distances than either HD-SDI or Network IP cameras and without the latency and bandwidth issues that are so regular with IP Cameras.

In addition, AHD is able to transmit video, audio and control (OSD or PTZ) over a single coaxial cable instead of requiring separate cables for each transmission. Also, it is the cost effectiveness.


What is HD-TVI?

TVI lets customers who already have run BNC cable, the capacity to upgrade to an HD solution without changing any wiring. One of the best things about TVI is that you can upgrade cameras consistently. TVI recorders (TVI DVRS) are Backward Compatible with Analog Cameras – if you plug an analog camera into a TVI recorder it will identify that it is receiving analog rather than TVI’s digital signal and record in analog; if you plug a TVI Camera in it will recognize the digital signal and record in HD. As the video is compressed, TVI is perfect for upgrading to HD if you have already run BNC cable, but will not replace IP cameras as the dominant cameras of the future.

TVI recorders can gain signal from TVI cameras or Analog cameras. TVI is a transitional technology to help people with already existing cable get higher resolutions. All new installations should use IP cameras and NVRs as IP can already do 5x the resolution as TVI and IP cameras are considerably easier to install.

Contrasted with IP cameras, TVI cameras require Power Adapters (Wall Plugs) or Power Supplies (Power Distribution Boxes). Power distribution boxes are highly suggested, as power adapters don’t have any surge protection. TVI cameras use Siamese Cable and BNC Connectors.


What is HD-CVI?

HD-CVI (Composite Video Interface) was advanced by Dahua in 2012 and began to saw wide-release in 2014. This technology was a progress for CCTV cameras as it brought HD images and allowed for high-definition analog images to travel well over four hundred and even five hundred meters of cable. 


What are the differences HD-CVI vs HD-TVI vs HD-AHD?

So what are the main differences between these technologies?  For customer the most important thing is the split in how these technologies encode videos or, to be more specific, in their DVRs. While IP cameras can encode from the camera itself, as IP cameras are primarily tiny computers, HD-CCTV’s send their data to DVRs for encoding. The problem is that each technology must use its own DVR. You cannot cross an HD-CVI camera with an HD-TVI DVR, for instance. This is important as it means the consumer will be sticking with the technology they purchase first.

(Note: Initially, even old CCTV cameras did not work with newer DVR’s, but some new DVRs have amended this. For instance, HD-CVI’s Tribrid DVR, which supports analog, HD analog, and IP channels. Having such a DVR lets one to slowly upgrade their camera system instead of being forced to do a whole system replacement just because of a bottleneck at the DVR. Nevertheless, no new DVR has yet to let these three HD-CCTV technologies to communicate with one another. If you buy an HD-DVR for HD-CVI technology, then you best stick with HD-CVI cameras or otherwise you will need to buy a new HD-DVR!)

Another large difference is just who is manufacturing these technologies. HD-CVI products are both advanced and manufactured by Dahua. Based out of China, Dahua surprisingly does very little marketing, although their HD-CVI technology can at times be found masked by behind other names like HD-AVS or HD-MPX.

Contrastingly, HD-TVI was developed by Techpoint, but Techpoint is a chipset manufacturer. HD-TVI products are instead sold through other manufacturers, most primarily Hikvision which, as mentioned, is the largest camera manufacturer in the world, and LTS Security, which stands as the largest reseller. HD-TVI was also made to be open source, so there are a lot of smaller manufacturers moving HD-TVI products around the market. HD-AHD is the most notorious for being distributed by no name brands, which means its price point is also considerably lower than its two competitors. Nevertheless, as mentioned before, HD-AHD was also recently picked up by Hanwha Samsung which makes it much more formidable on the market today and especially going forward.

While these cameras have little technical differences, you are possibly to see quality issues depending on who you are buying them from. A no-name cheapo brand is definitely going to be more interested in cutting costs to ship out a low-cost product. You don’t just magically cut manufacturing costs, quality is going to be taking a hit somewhere. If you are a customer, you just need to keep in mind that you get what you pay for. If you’re seeing giant gaps in pricing between similar products then you also need to be looking at who is manufacturing the product.


4 in 1 video output (switchable TVI/AHD/CVI/CVBS)

4 in 1 video output (switchable TVI/AHD/CVI/CVBS)



Finally, these technologies are not that different from one another. You can actually drive it down to the overly detailed technical levels, if you want, and debate about the differences between PO3100K+DH9801 and OV9712+NVP2431H sensors, but it’s just not that important to the average camera consumer. What most needs to be understood are these two factors:

– DVR’s cannot communicate across technologies.

– Manufacturer reputation is crucial to buying a reliable product.

Guide for choosing the top brands of CCTV camera to secure your place!

Crimes have been increasing day by day very fast. Surveillance plays a key role to avoid and stop such criminal activities all around us. Keep an eye on the things you value most by installing CCTV cameras come in several modes like recording only, recording with sound effects, hidden CCTV cameras, and wireless cameras and so on. Top CCTV systems and cameras are set to arrest criminals. It leads to feeling safe, stable and secure in people’s life.

What many individuals don’t know, however, is that there is a range of different best brands of CCTV camera which fit various circumstances and that selecting the proper camera for the right demanding is essential.

If you are going to buy a top CCTV system then there are so many factors that you should keep in the mind. The most important factor is which company gives you the best service.  Here, we run through these brands of cameras and what makes them more suitable.

 There are so many companies available in the market of CCTV but very few companies available who can provide a quality service to their customers so before making any decision you have to make sure that they can give you a quality service after the sale.

So in this article, we like to take a look at our favorite 4 security cameras available in the UK at the moment, which we’ve included in the list below. In other words, there are 4 factors we are going to cover in this and listed below. You’ll find information about the brand at first, and then the camera’s features, cost, and quality.


Top brands of CCTV camera uses in the UK:


Dahua (Overview of Company Profile)

Dahua is a high-tech team that majors in video surveillance. They have a wide variety of merchandise with competing features. Dahua has almost 13,000 staff all over the world. Dahua merchandise and facilities are used in over 180 nations around the globe.

Dahua products are wide-scale utilized in key vertical markets such as public security, traffic, retail, banking & finance, and energy, etc.  a lot of great tasks have been established with Dahua solutions and products – China International Import Expo, the Rio Olympics, G20 Hangzhou Summit, the 28th and 29th ASEAN Summit, Recife Subway in Brazil as well as many others. Committed to the mission of “Enabling a safer society and smarter living”, Dahua Technology will join to the core value of “customer-centered “, provide the market with excellent quality and service to create more value for customers and make unremitting efforts to build a safe, intelligent, convenient and efficient society.

Dahua IP Camera cucctv


In order to better service our global friends and customers, Dahua Technology continuously invests in building up its global footprint and presence and aims to service every customer in every corner of the globe.


  1. Professionalism; We aim to be a professional partner to our customers, our industry co-workers, and internal associates
  2. Integrity; Integrity is a core value in our blood not only towards our valued customers but also our partners and our internal co-workers.
  3. Innovation; we keep on investing in R&D to innovate for the greater good.
  4. Integration; We maximize value to the customer by integration with application systems and cooperation with industry partners
  5. Responsibility; We commit to being a responsible one in our society, bringing value to our customers, and taking social responsibility in building a better-secured world
  6. Open; we pursue an open and connected network, driving the establishment of a security industry ecosystem.


  1. Dahua offers a five-year warrant that will rival many companies in the business. Their wide selection helps to back that up.
  2. Customer Oriented; we take customer happiness as the driving force for continuous improvement.



VISONIC (Overview of Company Profile)

Visonic is an international Producer of top quality electronic security systems and items. they are committed to improving people’s way of life by increasing their sense of security. their user-friendly Home Security Systems are key parts of everyday family life for people of every age. By providing real-time monitoring between families, homes, property, community support networks, they warrant people to continue their daily lives with full trust. Established in 1973 by Moshe and Yaacov Kotlicki, Visonic became a public company in 2004. It was listed on the London Stock Exchange (main list) (LSE) in 2004, as well as on the official list of the Tel Aviv Stock Exchange (TASE) in 2006. Acquired by Tyco in 2011, Visonic is now a private company.





For alarms and CCTV products you can rely on, Alert Electrical have you covered. Our wireless burglar alarm systems and wired burglar alarm systems benefit from the latest CCTV technology giving you the best available tools for securing your property. With a wealth of products and features to choose from, including the very latest in smart burglar alarm technology, you will be well on the road to keeping your property safe with our range of CCTV and alarms from top manufacturers like Yale, Honeywell ESP. “But which solution is right for me?” you might be asking – so here’s how these systems break down.

Wireless Burglar Alarms: These are the perfect burglar alarm systems for renters and flats. These systems don’t need as much drilling and can be removed. They’re the perfect non-permanent solution for security.

Wired Burglar Alarms: These are more reliable than the wireless versions. Easy to drill and install, they offer permanent protection from burglars and trespassers.

In addition to your wired or wireless burglar alarm, you can add one of our wired or wireless CCTV systems too as the perfect home security feature to deter potential criminals from entering your property.


Our responsibility is reflected in our ability to understand and acknowledge the outcome of our activities.  Cooperation is a principle that guides us to act together, synergistically, with our internal and external stakeholders, as one. We will support the success of our partners: our clients, suppliers, and employees. We will be attentive to their aspirations, responsive to their requirements, recognize and appreciate their contribution to our success and support them at times of need to the best of our ability. As part of our commitment to the community, we will ensure the strengthening of the communities in which we operate.    Cooperation of this kind within the company enables us to work as a single company with multiple units that all promote the same vision. Cooperation means recognizing the needs of the other, and it becomes visible through sharing, listening, consulting and having a dialogue with all entities or people that are affected by, or affect our business activity.   Proper cooperation will allow us to provide better service to our clients, in a way that will give us significant added value and enhance our capabilities.

At Visonic, we consider safeguarding the environment as one of our prime values. This includes reducing as much as possible the use of consumable natural resources and minimizing the negative environmental impact of business activities, development and production and of the products themselves during the entire product lifecycle. In order to achieve these goals, Visonic acts according to the following principles. Meet the relevant environmental legal and professional standards that the company has set out for itself. Set measurable environmental, goals and milestones and strive to continuously improve performance in terms of environmental preservation and minimization of the environmental impact of our activities and products.

Encourage our suppliers and subcontractors to respect the environment.

Periodically examine our environmental protection management mechanisms and their implementation.

Make this policy widely known among all employees and strengthen their awareness of the importance of environmental responsibility and of Visonic’s activities in this field.


PROLUX (Overview of Company Profile)

PROLUX is famous for supplying creative products and outstanding quality; they are quickly becoming one of the most in-demand CCTV businesses in the United Kingdom.

Prolux 8 Channel 8MP 4K CCTV Security System Trade HDCVI Starlight Bundle (KIT) for CCTV Installers



The Prolux CCTV cameras systems Can run the below features:

No Light? Low Light? No Problem! It can work in the very low possible light illumination being 0.001Lux and using 24 IR LEDs can provide an IR distance of up to 20m. When the light levels get to below, the camera photodiode switches automatic to IR mode.

This CCTV camera is a vandal-proof eyeball-shaped camera and can be used outdoors.

In addition, it has the following features:

  1. Security Systems 2.Alarm Systems 3.Security Lights 4.Closed Circuit Television (CCTV) 5.Remote Keypads 6.Access Control Systems 7.Prolux Digital Video Recording 8.Alpha-Numeric Keypads 9.Movement Sensors 10.Window and Door Systems 11.Glass Break Detectors 12.Infrared Detectors 13. Wireless Security



Cameras and Recorders ranging from 2 Megapixel all the way up to 8 Megapixel 4K


This camera is grey in color and all ProLux products come with a 1-year warranty.


LTS (Overview of Company Profile)

LTS delivers industry-leading security solutions and value-added services in video surveillance with a full line of CCTV, access control, burglar/fire alarms, cabling and more.  Our nationwide locations provide immediate shipping, same-day pickup, and timely delivery.

Company Profile LTS is a U.S. provider of technology products and video solutions with local advantages. We deliver the industry’s leading OEM, ODM, and value-added services in video surveillance equipment and its full product line. With knowledgeable consultants, LTS helps installers, integrators, and security professionals drive informed purchasing decisions and succeed in the markets they serve


4 Channel CCTV System 1080p Security System Bundle


Wired   Connectivity:

Infrared/Night Vision

Indoor/Outdoor Application:


Full HD 1080P            24 IR LEDs up to 65ft


End to End Support; with our achieved, industry-driven sales and technical support team, 10 out of 10 customers comment that LTS helps achieve what most other companies cannot. Support, we are with you 100% of the way, end to end on any security project needs. Speak with a local branch representative today and experience why LTS has pride in its customer service.

Our product experts are back at it! Our experts are taking you on a step-by-step guide for the setup of our indoor intercom station. Check out this tutorial for quick and easy instructions for implementing video access control solutions!



The global CCTV camera marketing is estimated to increase compound annual growth by 13% to 2022 in order to reach marketing worth more than $25 billion until 2022. The demand for first-rate CCTV cameras is expected to increase further at a high rate due to the rising urban growth, change in lifestyle and need for security monitoring by the governments and public bodies.

A complete guide to choosing correct CCTV camera suppliers

People are usually worried when they leave office or house. After locking, they walk in reverse, And run back to keep guard over their property. Indeed, it is not possible to be in two sites at the same time. We can’t have a trip to the store and expect to know what’s going on in our homes. We can install locks and security alarms, but nothing is failsafe. If you want to keep an eye on what’s going on around your business or home, CCTV suppliers UK may calm your anxiety.

CCTV ; Best solutions for surveillance

Closed-Circuit Television or CCTV is a system of devices that allows you to monitor or record activities in and around a place for security purposes. In fact, CCTV trade suppliers provide you with images of people in your homes and businesses or in public space including the city centers, streets, airports, and on local public transports. CCTV images can be used as proof in court. CCTV suppliers are committed to reducing crime and ensuring that the city is a safe place to live, work, visit and socialize.

CCTV trade suppliers have been around for decades, but improvements in recent years make them even more effective at arresting criminals. CCTV reseller UK supply a wide range of security cameras, all kinds of Security cameras has its own specific characteristics. Although some are large and out and might serve merely to prevent criminals from nearing a home, other cameras are small and purposed to stay secret from sight.

If you’re looking for setting up some type of CCTV to view events live, and recorders archive footage for later reference, or demanding to find the best Wholesale CCTV camera suppliers, there are a lot of questions to ask yourself before getting started.

To choose the correct security camera supplier for certain situations, follow this article.

How To Choose ?

There are 3 tips to be considered before choosing a CCTV:

1- Do you want indoor or outdoor CCTV?

There are some differences between indoor and outdoor CCTV which you have to know. The important distinction is their ability to withstand the different situation they are located in.
For example, we all know the UK weather is very changeable, one day it’s freezing then the next, raining and shortly afterward temperatures can rise. You can control the temperature indoors, but not outside! Outdoor cameras need to be able to face all types of weather such as rain, moisture, snow, extreme heat and cold, even wind.
In addition, Outdoor CCTVs are more tampered with, so they are generally made of more long-lasting materials, like metal. Even sometime they should be housed in a casing in order to prevent easy removal. So you should choose UK CCTV Supplies with high-quality CCTV equipment. On the other hand, Indoor CCTVs can be smaller, more lightweight. They often aren’t waterproof and aren’t built to the same strength and extreme standards that outdoor CCTVs are.


Indoor CCTV


Outdoor CCTV


2- Do you need night-vision CCTV or not?

CCTV needs light to be effective, so if you’re serious about CCTV, you should provide the right lighting for it. But how can a CCTV see in the dark? Remember, light is electromagnetic radiation within a certain portion of the spectrum. The word light usually refers to visible light, which is visible to the human eye. Visible light is usually defined as having a wavelength in the range of 400nm to 700nm. Infra-Red 850nm and 940nm are commonly used in night-time CCTV surveillance cameras.
The human eye is tuned to the visible light part of the electromagnetic spectrum, typically 400nm (violet) to 700nm (red). Human eyes best operate in the middle of the visible light spectrum detecting green colors easily, whilst being able to detect certain color reds and violets. Unlike the human eye, CCTV cameras are able to see beyond the visible light spectrum in particular Infra-Red wavelengths (850nm and 940nm).
CCTV trade suppliers should provide security cameras come with night vision (infra-red camera) which are still able to see things even if it’s pitch black. If you don’t know what we’re talking about, then you’ve probably at least seen night-vision footage from those ghost-hunting TV shows—that black and the white or black and green look is all too familiar.
If you’ve ever looked at the front of a security camera, you’ve probably noticed that it’s covered in a handful of small LED bulbs. This is the IR light, and when it gets dark out, these lights turn on and act as a floodlight of sorts, dousing the camera’s field of view with infrared light. Finally, you should make sure that you want night-version camera or not?

HYBRID-1080P-Varifocal-2.8-12mm-Lens-IR 60m-1/2.7-SONY-CMOS-Sensor-ProluX-CCTV-Bullet-Camera-1080P-Varifocal-2.8-12mm-Lens

Night-vision CCTV

3- Do you require a wired or wireless CCTV ?

CCTV systems collect your security footages in one of two ways: through a wired network or a wireless network. Both of them have their own advantages and disadvantages.

Wireless system:


  1. Easy to move and quick to set up.
  2. Flexible.
  3. Portable (you can transmit videos to your computer, tablet or mobile)
  4. It can be installed in many rental locations that don’t want placing the wire in the wall.
  5. More efficient in the long run, (This is because a camera requires fewer lines for more features and can deliver higher-quality footage that can be remotely accessed and stored, which removes the possibility of someone breaking into your home and destroying past footage.)


  1. Need Wi-Fi networks.
  2. Risk of being hacked.
  3. Expensive.
  4. Poorer picture quality.

Wired systems:


  1. Reliability (Wired security systems are not susceptible to interference from wireless signals due to the physical connections between the camera, recorder, and router.)
  2. Greater variety of camera styles available.
  3. Wired cameras can provide video resolutions at HD and beyond, transmitting large amounts of data over cabling.


  1. Take a little more time to set up.
  2. Less flexible.
  3. Vulnerability to power outages (If your property loses power, so will your security system.)

Now that you know the pros and cons of wired and wireless security cameras you can make an informed decision on what kind of system is optimal for your workplace or home.