The problem of monitoring by centralized power supply
A centralized power supply is equivalent to a small power supply that eliminates the need for cameras. Direct 12V output power to the camera, but in the power line selection to meet the national standard, and the distance is not easy too far. If the plan is not split in 20 cases. Proposed to use 12V40A voltage regulator, but also according to your monitor's night vision, as appropriate, add and subtract (infrared and white light), and there are different light plate type.
You have this 12V10A power supply. The front L, N, and ground, connect the normal 220V power supply. COM and +V are 12V + and -You have two pairs of positive and negative ones, each of which is 12V10A. Not altogether
Line loss will also be lost, do not go too far.I don't know what is your monitor head through which light equipment, so that each camera using 2A, you need to install 20 cameras with a 40A power supply, it is also assigned each head 2A.Otherwise, if the current is not enough, it will affect the night vision.
