If the infrared light is not on, it is recommended that you confirm whether the wiring of the infrared light is normal? Is the equipment power supply normal? If it is a network camera/dome, can you also confirm whether infrared is enabled through web access? At the same time, confirm that the day and night mode is set to automatic or timed switching.

If it is normal during the day and the infrared light turns on and off frequently at night, it may be caused by unstable power supply of the camera. Compared with the daytime, the power supply requirements of the device will become higher after the infrared is turned on at night. It is recommended to provide stable power to the device nearby.