Why is the full-color camera light always on at night?

This is because your camera is a night vision camera. The main components of night vision camera are camera shell, infrared lamp, camera lens and camera motherboard. In a dark environment, when there is no visible light or only weak visible light.

The infrared photosensitive element starts to work, the wick in the infrared lamp panel emits infrared light, and the reflected infrared light is transmitted to the motherboard through the lens, and then the motherboard converts the optical signal into an electrical signal and finally into a video signal. In this way, we can now see the monitoring range in the dark environment.