7 questions for selecting the right surveillance camera
7 steps to choosing the right surveillance camera!
Our webshop helps you to find the right surveillance camera for your video surveillance:
The filter search that you see at the top of the article overview (see example here).
The selection wizard, which guides you step by step to the optimal video surveillance camera for your purposes.For the selection of the optimal surveillance camera, however, some questions should be answered in advance, so you are satisfied with the result and many years of fun.
The following points give you a few important clues in your selection:
1. LocationIf the surveillance camera is mounted outside, whether exposed to direct moisture or rainproof, it should be an IP66 or IP67 classified camera. This ensures that no moisture or moisture penetrates into the housing and destroys the camera. An indoor camera may work outside for some time, but it will inevitably fail after some time.
2. Use by day and by night
It must be clear whether the camera should also record reasonable videos at night and in dark rooms, or whether it should only be used during the day or in constantly lit rooms. So-called IR (or night vision) LEDs emit a light that is not perceived by the human eye, but appears bright for the camera sensor daylight. Since the IR frequency is above the color spectrum, the videos are no longer colored, but black and white.
The IR / Night Vision LEDs installed in the surveillance cameras have different ranges. This should be considered, for example, when monitoring a plot or a long driveway. The range should be at least 15-20 meters in the outdoor area, in the interior range usually 5-10 meters. Pay attention to the "Night Vision" icon and check the range of the LED in the datasheet of the camera.
3. Power supply of the camera
Today's surveillance cameras work 99% with 12V DC, which means that a power supply is usually used. If there is a power outlet or other power source at the installation site of the camera, it is sufficient if a data transmission cable is placed up to the camera. (Later will be discussed on the wireless transmission)
If there is no voltage source at the installation site, then there is the possibility of POE supply. POE is called Power Over Ethernet and describes the voltage over the network cable. Here the power supply of the camera is sent together with the data via the network cable. The prerequisite for this is a camera suitable for POE (in the meantime, 80% of the video cameras offered are equipped with POE) and a so-called POE switch.
4. Type of transfer
The standard network cable is ideal for the secure transmission of video signals - with the help of network extenders, lengths of more than 800 meters can be achieved! However, it is not possible everywhere to lay an additional cable. For such cases, WLAN cameras offer themselves. Their technology is very reliable, although the range still depends heavily on walls or other obstacles. In case the camera is too far away from the WiFi router, it is possible to use WiFi repeaters to increase the range.
5. Selection of the lens
One of the most important steps is the selection of the objective suitable for the intended use so that the area to be observed is actually detected by the surveillance camera. A large number of cameras already have a so-called "varifocal", ie a variable objective which can cover a large angular range, for example adjustable from 25 ° to 90 °. This is done manually or with a motorized lens that can be remotely controlled from the PC. It should therefore be determined before buying a camera, which angle must be covered. The following link takes you to a lens calculator where you enter the maximum distance and the width (or height). It is also important to specify the camera sensor, which you can find in all technical details. Here you can calculate the right lens with the correct viewing angle.
6. Live picture or recording?
With our plug & play cameras (P2P), you can watch the live video directly on your phone via an app - the setup is done in a few minutes. But what if you want to see what happened 5 minutes or 2 hours ago? You can see on the live video that your front door is open, but you do not know how it came to be or how long she has been standing up. To record the video you need either an SD card in the camera or a connected recorder. If you have a built-in SD card slot, you can use the SD card (in most cases it will simply insert a micro SD card and the app will access it.) Alternatively, you can connect your camera to a recorder that records all video streams Recording capacity is the standard solution for professional or commercial video surveillance.Also, the access can be controlled via an app, only that the app does not access the camera, but the recorder.
7. Do not forget the accessories!
For all surveillance cameras, there are different brackets in the accessories (in the webshop you will find the appropriate brackets under the respective cameras): wall, ceiling, mast or corner brackets. With a few exceptions, the right mount is required to properly place the camera. Some brackets have a so-called "junction box" in which all cables can be weatherproof accommodate.