Dahua Technology: Review of CCTV Cameras and IP Cameras from Dahua

Dahua Technology’s HDCVI CCTV cameras excel in functions and prices

Dahua Technology is a Chinese video surveillance products provider, with 22 branch offices around the world. The company achieved “the second highest market share of the of global video surveillance equipment market in 2015” and is a well-known brand of CCTV Cameras, Video Recorders, Alarms, Locks, Sensors, among other security devices.

Dahua Technology offers a wide range of products to cover the needs of different environments such as residences, stores, industries and other important facilities.

The company invests more than 10% of their sales revenue in Research and Development per year, aiming for the constant improvement of their technologies. In the year 2015, Dahua Technology has a revenue of about CNY10.1 Billion (about US$1.57 billion).

HDCVI CCTV Cameras from Dahua Technology

HDCVI, High Definition Composite Video Interface is actually an invention brought by Dahua Technologies, which they have allowed to be open to other manufacturers. HDCVI CCTV Cameras are considered as a revolution in the world of video surveillance.

Dahua Technolog’s HDCVI CCTV camera

This technology is a new method of video signal transmission via coaxial cables which allows a better resolution. It is a high quality yet cheaper option than Network IP cameras and a better alternative to the same price analog CCTV cameras, which deliver a lower image quality.

Systems with HDCVI technology are able to transmit audio, video, and control through the same cable, while regular analog CCTV Cameras require different cables for each signal.

Dahua Technology offers several types of cameras under this product segment, divided into several categories: Lite, Pro, Ultra, and Multi-Sensor Series.

Lite Series groups 1 to 4 MP cameras with different characteristics regarding shape, such as Bullet, Dome, and Eyeball cameras. Also, varifocal and waterproof models are available.

Pro Series include cameras with 2MP to 4MP resolutions and similar shapes as those mentioned above.

The Ultra Series goes up to 8MP. Some models in this series comprise Starlight technology for low-light conditions, such as the MP IR Varifocal Starlight HDCVI Bullet CCTV Camera.

Multi-Sensor series is represented by the 3 x 2 MP Multi-Sensor 180° Panoramic HDCVI IR Bullet CCTV Camera, which includes three 3.6 mm lenses, delivering an 180° Panoramic Output; also offers 2D and 3D Noise Reduction for a sharper image.

Network IP Cameras from Dahua Technology

These types of CCTV cameras work wirelessly via an IP Network, which means it is a higher and more expensive technology.

Dahua Technology has a wide offer in this category of IP cameras, including Lite, Wi-Fi, Multi-Sensor, Ultra Smart, Eco-savvy 3.0, Consumer and Panoramic Series. (Further reading: how to select the best IP camera?)

Lite Series cameras range from 1 to 4 MP in several shapes (dome, bullet, and eyeball) and some of them come in the “mini” size version of each shape.

Wi-Fi Series includes cameras with resolutions from 1.3 to 3 MP able to work with both Wi-Fi and Ethernet.

Dahua Technology’s IP Camera

Multi-Sensor Series cameras are mainly by the DH-PSD81602N-A360 and the DH-IPC-PFW8601N-H-A180 models. The first one offers a 360° panoramic view with 8 sensors of 2MP each while the second one is capable of delivering an 180° view and includes Ultra-low light sensitivity for dark conditions.

Ultra Smart Series range from 1.3 to 12 MP in several shapes (box, bullet, dome, and pinhole) and some models offer the following features:

• Face Detection
• Tripwire Detection
• Intrusion Detection
• Scene Change Detection

Eco-savvy 3.0 Series groups several models of cameras with resolutions ranging from 2 to 8 MP, also with smart detection functions such as those mentioned above as well as the Starlight technology for better footage in low-light conditions.

The Consumer Series goes from 1 to 3 MP in resolution in most sizes and shapes.

Panoramic Series cameras are divided into two groups: Fish Eye and Multi-Sensor (just like the ones described above). Fish Eye cameras are vandal proof and some models include a built-in microphone, all embedded in a different design that brings many benefits to the user.

PTZ Cameras from Dahua Technology

PTZ cameras are devices available for both HDCVI Camera and Network IP Camera. PTZ (Pan-Tilt-Zoom) refers to the feature of automatic motion/thermal detection of the camera, which is capable of changing its zoom control and direction towards an identified target. 

Dahua Technology offers several types of cameras in this category with very similar characteristics to the ones described above for both Network and HDCVI cameras.

Optical zoom and tracking features are the main characteristics of these specific type of device, which allow the possibility of monitoring certain objectives by detecting changes in the scenes covered and then zooming in in the area where the change was perceived.

All in all, Dahua Technology works hard in order to offer superior quality products with great features that improve security systems in all kinds of environment. 

Want to install Dahua CCTV cameras? Contact us and you will get the best price in Singapore. (Further reading: How much does it cost to install CCTV Cameras in Singapore?)

Contributed By CCTV Camera, CCTV Singapore, and Safe Singapore

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Hikvision: Review of CCTV Cameras and IP Cameras from Hikvision

Hikvision: The No. 1 Surveillance Devices Manufacturer in the world

Hikvision is one of the most important companies in the field of video surveillance around the world, with the presence in over 155 countries and regions. In fact, HikVisio ranks No. 1 in many areas of CCTV surveillance equipment production worldwide (Reference: HikVision Claims Top Position). HikVision has a revenue of about CNY 25.3 Billion (about US$3.72 billion) in the year 2015.

Hikvision designs and manufactures high-quality CCTV and surveillance related products, based on a strong program of research and development. With a wide range of devices, from IP/Analog cameras to the required software and alarm systems, Hikvision is a reference when it comes to video surveillance devices.

Innovation is the main characteristic of Hikvision’s products, offering state-of-the-art technology suitable for many environments such as retail shops, warehouses, buildings, offices, restaurants as well as residential and industrial applications.

HD-TVI Turbo HD CCTV Cameras from Hikvision

Hikvision’s  analog CCTV cameras, for instance, is the most affordable option but with very remarkable results. Turbo HD technology makes it easy for you to migrate from analog security systems to a digital installation, bringing the possibility of obtaining full HD footage with analog cameras.

Hikvision HD-TVI Turbo HD CCTV Cameras

Turbo HD technology offers video transmission via a coaxial cable and it’s compatible with the existing analog cameras. These products are based on the HD-TVI (High Definition Transport Video Interface) standard which turns out to be the most adequate for migrating from analog systems already installed, delivering resolutions up to 1080p.

The variety of Hikvision HD-TVI Turbo HD cameras have resolutions ranging from 1MP to 5MP, including various shapes like dome, turret, and bullet models. Outdoor, indoor, low-light and motorized cameras are available.

Regarding video storage, HD-TVI Turbo HD systems can be installed along with Turbo DVR (Digital Video Recorders) which offer simultaneous connectivity to both network and analog camera types thanks to their capability of automatic signal detection and recording it using the existing cable installations.

There are also other types of analog cameras offered by Hikvision like DIS & PICADIS, CCD and HD-SDI cameras.

DIS & PICADIS analog cameras deliver a high-quality video image with outdoor and indoor models available. This segment offers dome-shaped and bullet type cameras. The latter model comes in two forms: fixed lens and varifocal.

Varifocal cameras have a lens allow the covering angle adjustment and the focal depth.

CCD cameras come in various types. CCD stands for Charge Coupled Device and it means these cameras are more sensitive to light, capturing a wider range of image tones. Several models are offered by Hikvision under this technology: dome (for indoor and outdoor), box cameras, pinhole, fixed lens and varifocal cameras.

HD-SDI cameras are the High Definition alternative among analog surveillance equipment. They are capable of delivering resolutions of 720p and 1080p. Some models are built as vandal-proof, offering color or black/white footage, and also come in several shapes (dome, box, bullet) as well as tow lens options (fixed and varifocal).

However, it is worth the attention that HD-TVI turbo CCTV cameras occupy the main lines of Hikvision’s daily analog cameras’ production.

Large Variety of Network IP Cameras from Hikvision

Hikvision IP Cameras

Network IP cameras offered by Hikvision are superior in terms of resolution and the range of features that can be achieved with it. This technology, being based on a network installation supported by the internet, allows even more functionalities than analog cameras such as:

• Remote view: from a Smartphone or PC, the client is able to view the live action of the covered zone from any other place.
• Smart features such as those included in the Smart IP Solution 2.0, an innovative set of features that include the following: Target Cropping Stream, Object Counting, Region enter/exit, Object Left Behind / Object Removed, license plate recognition features (ANPR), Smart Playback, Smart Backup, People Counting Mode, etc., all of them designed to make the most out of video surveillance.
• A wide range of camera resolutions, day/light vision devices, motion sensors, audio recording.
• Greater storage capacity thanks to the NVR (Network Video Recorder) technology, allowing compressed high definition video to be stored in a Hard Disk Driver, and even audio from IP cameras. Compared to DVR systems, this option is highly superior regarding resolution and image quality, since data is sent and received through a local network.
• Thanks to their enhanced functionalities, IP cameras have a better performance in a greater number of applications and environments, especially those with hard conditions such as night surveillance, manufacture plants or any other environment with high traffic, places where control over workers and merchandise is highly required, etc.

Hikvision has a very complete product catalog for each particular case, from home applications to industry safety needs. Cutting edge technology is a characteristic that comes with the Hikvision brand, from beginning to end, and bringing a lot of options that can be adapted to every budget but always keeping high-quality results in all cases.

Hikvision in Singapore

Currently in Singapore, all the newly installed CCTV cameras at the HDB void desks, open areas and other common areas, are supplied by Hikvision. The new series IP based CCTV cameras are proved to be effective in deterring loan sharks, nabbing litterbugs and stopping illegal parking. It is said that the total number supplied by Hikvision and installed at the HDBs is about 100,000.

Hikvision also helps to protect Singapore’s World-class Theaters on the Bay, and other public locations such as MRT stations, POSB and DBS ATM machines.

Contributed By CCTV Camera, CCTV Singapore, and Safe Singapore

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CCTV Camera Comparison: Wired or Wireless CCTV Camera

Before choosing what CCTV Camera system to get, sometimes the customers stumble upon the following question: should I choose wired or wireless CCTV camera? What are the pros and cons of wired and wireless CCTV cameras?

As you might have guessed, none of the options available are perfect, so it mostly comes down to your personal preferences. But to make your buying decision easier, we’ve composed a comprehensive list of what you can expect from each type of device, both positives, and negatives.

Note that a wireless CCTV camera has to be a digital IP Camera, as only digital signal can be transmitted wirelessly.

General Comparison of Wired and Wireless CCTV Camera in Table

	Advantages	Disadvantages
Wired CCTV Camera	Better video quality Nearly no interference Reliability No need separate power	Installation is more challenging Not easily portable
Wireless CCTV Camera	Easier installation Portability Can be flexibly placed Reduced Maintenance	Less reliable Risk being hacked High cost Possibility of interference

Advantages of Wireless CCTV Camera

1. Easier installation

Wireless IP Camera from Hikvision

This is especially important if you want to do it yourself. That way, you will save time and also ensure that you’re going to be capable of doing it in the first place. In a typical scenario, all you have to worry about in terms of installation is having a power source in close proximity to your wireless CCTV camera, and you’re good to go.

2. Portability

Since these types of wireless CCTV cameras tend to be rather lightweight and easily installed, you can take them anywhere you want to without trouble.

3. Can be placed anywhere there is a Wi-Fi signal

Extending on the previous points, as long as you have a power source and a Wi-Fi signal nearby, your wireless CCTV camera will serve you well. This also comes in handy if you want to move it to another location later on.

4. Reduced maintenance

Maintaining a CCTV camera can be troublesome. But since a wireless CCTV camera doesn’t need a cable to function, ideally you won’t be spending any money on cable maintenance (although you will still need the power cable to power up the wireless CCTV camera)

Disadvantages of Wireless CCTV Camera

1. Less reliable than wired CCTV cameras

The reliability of wireless CCTV camera relies on the wi-fi signal. Sometimes you’re going to be experiencing instability of wi-fi signal, or even weak signal, which means you could potentially lose some crucial moments of footage. In that aspect, a wired CCTV camera is more reliable than a wireless CCTV camera

2. Risk of being hacked

Data security is an important aspect of today’s world, and the con of using a wireless CCTV camera is that you risk being hacked. Although breaching the security of your camera is not something that a novice hacker can do seamlessly, there is still a risk. Knowing this, you have to make a decision based on how comfortable you are that someone else may have access to the recorded footage at any given time.

3. Cost is high

For the most part, wireless CCTV cameras tend to be more expensive than their wired counterparts.

4. Possibility of interference

Sometimes, wireless CCTV cameras experience interference which can lead to false alarms, dropped signals, and lost video.

Benefits of Wired CCTV Camera

1. Best video quality

Out of all the CCTV cameras, wired CCTV cameras tend to have the best picture quality.

2. No interference

If you’ve installed a wired CCTV camera properly, one of the pros is that you won’t have to worry about any interference from Bluetooth devices, telephones, wireless networks, alarms, microwave ovens, baby monitors, and the like.

3. Reliability

Expanding on the previous points made, a wired CCTV camera is one of the most sturdy and reliable options if you’re looking for the best picture quality and availability at all times.

4. No need for a power source nearby

Unlike with what you can expect from wireless CCTV cameras, a wired CCTV camera doesn’t require a power source nearby – a cable will carry the power to it. And if you use a power distribution box, many cameras can be powered at once.

Disadvantages of wired CCTV camera

1. Installation can be challenging

Unlike wireless CCTV cameras, a wired CCTV camera can be quite challenging to install. Unavoidably, you’re going to have to drill a hole in the wall, and you can run into all sorts of obstacles while you’re at it: concrete blocks, studs, and the list goes on. To make matters even trickier, these are hidden behind the wall, so you won’t be able to tell them in advance. And if you want to steer clear of interference in picture quality, you’re going to have to avoid placing the cable along a high-powered line.

2. Not easily portable

As you may have imagined, since there is a lot of work involved during the installation phase, moving it to a different location can be quite tricky, and it’s usually better to just get a new one in this case.

Conclusion

When considering the pros and cons of wired and wireless CCTV cameras, you always have to consider what matters the most to you, as well as the budget you have available. But hopefully, this article has helped clear up some of the questions you may have had.

By CCTV Singapore

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How CCTV Camera Works?

This is the second series of how CCTV camera works. Read how CCTV works here from the components’ point of view

You’ve heard of CCTV cameras too many times. How CCTV camera works exactly?

How does a CCTV camera work? You may be asking yourself this question before installing the CCTV camera. To start, CCTV stands for Closed Circuit Television and it’s a system used for video surveillance which combines a certain number of cameras linked to each other that are placed in the desired zone in order to keep track of actions taken there. It is called “closed” because their footage is not broadcast to the public; it is used exclusively for safety and security purposes.

Real-time live viewing is one of the main reasons why people install CCTV camera systems in their homes, offices, retail shops, warehouses, schools, restaurants, etc. These systems allow them to keep their families and assets safe and well watched.

The working logic of a CCTV camera should be known by everyone that feels the need of installing a CCTV Camera surveillance system, whether at home or in their business. Here is an explanation of how these devices work, beginning with some essential definitions.

1. Basic Characteristics of CCTV Camera

A CCTV camera is an equipment composed of an image capture element (CCD or CMOS, explained below), an electronic circuit and a lens that will allow the visualization of a specific scene.

Some CCTV cameras also include microphones that allow to catch the sounds of the environment under surveillance and send them through the network for listening and recording.

There are different types of cameras, one for each particular usage. Depending on the conditions of the area that needs the coverage, specifications and characteristics vary. For instance: black and white/color image, outdoor or indoor use, housing, sensibility to light, resolution, size, etc.

Different types of lenses can also be found in the cameras and they can be chosen according to the requirements of every installation. Zooming options can be offered as well as other image adjustments that contribute to a better and more precise footage.

2. Analog and IP based CCTV Camera

CCTV camera can be further classified into two main types: Analog and IP Camera. These two categories are associated with the way the image is compressed and transmitted towards the video recorders.

Analog cameras are connected to each other using a coaxial cable and further connected to a monitor or TV where footage can be seen and recorded with a specific device.

IP camera can be connected with each other wirelessly (Wi-Fi) or via an Ethernet cable. Footage can be recorded inside the Network Video Recorder (NVR) or watched in real time from a PC or smartphone using the Internet. This kind of cameras offer higher resolution levels and consequently, a better image quality.

3. CCD and CMOS sensors of CCTV Cameras

Both types either have CCD (Charge Coupled Device) sensors or CMOS (Complementary Metallic Oxide Semiconductor) sensors. In any case, their function is to convert light into an electrical signal that is later processed and converted into a signal output that can be both recorded and shown on a monitor.

Most analog cameras use CCD chips while IP camera can use CCD or CMOS sensors indistinctly. The main difference between them is that a CMOS may not deliver a footage with good resolution when there is movement in the scene while CCD is able to offer sharper images in the video.

However, CMOS technology has improved and it is possible to get a high performance at a lower price, compared to CCD chips.

4. Image Compression: DVR and NVR of CCTV Cameras

The analog signal (in analog CCTV camera) is turned into a digital signal thanks to a converter (analogue-digital) and then it is transmitted to a DSP (Digital Signal Processing). Then this digital signal is turned again into an analog one via another converter so that it can be transmitted to the Digital Video Recorder (DVR) where it is codified and stored.

In the case of IP camera, the image is internally compressed or codified and transmitted through Internet Protocols (IP) using a network until it reaches the recorders, which are called Network Video Recorders or NVR.

5. Usage of CCTV Camera

Infra-red cameras are preferred for night surveillance. They use Light-Emitting Diodes (LED) placed around their lenses so they can detect heat waves and retransmit the images into the black and white footage.

There are also adaptable cameras that automatically change their working mode according to the light conditions of the place.

Dome-shaped cameras, spy cameras, and other types are available for every particular condition.

CCTV cameras are the essential part of video surveillance systems and their different characteristics must be taken into account in order to make the right choice for the whole installation and make the most out of their technology.

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