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The surveillance camera in the house is your eyes and ears. It will inform you at any time about the situation inside/outside the house and the general house condition, if necessary, it will activate an alarm or send a picture to your phone. How to choose the right home security camera system? Find out in my review below.
One of the main criterions for such cameras is the format of data transmission. Analog transmission is carried out by wires, and the signal can be in PAL, NTSC, AHD, TVI or CVI.
Today - Analog - Cameras
Today analog cameras are considered obsolete and are no longer available, although they are still commercially available.
Digital CCTV cameras transmit images over a wireless channel - WiFi, 3G or 4G. This means that the camera can be connected to the receiving device via the Internet or a local network. This gives you several advantages at once:
Disadvantages - IP-cameras - Delay - Video - Monitor
If we talk about the disadvantages of IP-cameras, you can notice a slight delay in transferring video to the monitor (about 2-3 seconds). Also, video cameras and receiving devices from different manufacturers may not be compatible. But in modern models, this disadvantage is less and less common, manufacturers are trying to make them as versatile as possible.
Recently, WDR technology has been used much more frequently. Where once a wide dynamic range was used only in premium devices, now, thanks to the introduction of inexpensive sensors that support this...
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