When I got home, the lights in the security monitoring yard at home suddenly disappeared. Is there a charge for monitoring? Tell me something else.

Check whether the hard disk video recorder network is connected. The network port indicator lights up. Eliminate network problems. Check whether the camera light will light up. Cover the camera with your hand. The lights don't work at night. Therefore. It is concluded that the monitoring centralized power supply is broken. Sure enough. The indicator light for monitoring centralized power supply is not on.

The infrared fill light is controlled by a light sensor. When you turn on the light, the light sensor is off. When you turn off the light, the light sensor will turn on, so the infrared fill light will turn on. Whether this fill light is on or not, as long as the camera is good, it will record normally and watch in real time. Turn on and turn off the infrared fill light, and only judge whether the camera is turned on or not.