The surveillance camera has a power cord, a video cord and a control cord. Does the power supply of the power cord have to be 12 volts? Are there weak currents in the video cable and control cable?

There are two ways to monitor power supply. One way is to provide 220V power supply to the front camera, and then convert AC220V into DC 12V through an independent camera power supply, which is suitable for monitoring systems with far lines. There is also a centralized power supply mode, that is, the terminal monitoring center (computer room) directly outputs DC 12V to the front camera, which is suitable for the monitoring system of line distance competition.

The nominal working voltage of the monitoring camera is DC 12V, and the positive and negative deviation is less than 5%, that is, between 1 1.5V- 13V.

The video line and the control line do not need and cannot be connected with power supply, but both lines have certain signal voltages 1.2V and 5V. ..