Connecting the surveillance camera to the room requires three wires, control wire, video wire and power wire. I don't know, right? What should I say?

If it's an ordinary surveillance camera, it doesn't need a control line, just a video line and a power line.

Generally, cameras use DC 12V power supply, which is directly plugged in. Fool connector, and a video cable with BNC head, so the cable at the other end needs to be connected with the male head of BNC head.

If it is a ball machine or RS485 is needed, just connect two process lines. Or a twisted ordinary network cable (two in one) is 485 points positive and negative, and it can't be controlled if it is wrong.

I am a professional in electronic surveillance camera in Shenzhen Nanqiang. I hope the answer will help you!