The power supply of the Yuntai camera in the cave adapts to the difference between the positive and negative poles of 24 volts.

Monitor the connection of power supply:

1. Generally, the power supply of surveillance cameras is 12V and 24V, and some are 5V. The following is an example of 12V. The power supply has seven connections, which are divided into input and output.

2. "Input": the input has three terminals, and the above figure is L, N and ground from left to right respectively. L corresponds to the fire line, n corresponds to the zero line, and three horizontal line icons correspond to the ground line. Three input terminals are commonly used 220V power lines.

3. "Output": the output has four terminals, two negative electrodes and two positive electrodes, two negative electrodes are COM and COM respectively, or some power supplies are marked (COM 1 and COM2), and then the remaining two are positive electrodes +V and+V. ..

4. The live wire, neutral wire and ground wire are commonly used power wires, and the negative electrode and positive electrode are the positive plate and negative electrode of the surveillance camera. General 12V 10A monitoring power supply can supply 10 monitoring cameras. For example, if 10 surveillance cameras are to be connected, the negative poles of the power supply of 10 surveillance cameras are all connected to the negative poles. Similarly, the positive electrode is connected to the positive electrode. Although the positive and negative electrodes are only two terminals, they can be connected together if there are more cameras.

5. If the transformer has an output plug. Cut the output line of transformer 12V, and carefully look at the line mark on the output line. Generally, there are signs, some are dotted lines and solid lines, some are word lines, and then the lines you connect are connected. For example, the output line is red with words, and the other end of the red line should also be connected with words. You don't have to cut the camera line.