Infrared sensor dimmer LED fluorescent light is lamps which use infrared sensor + MCU + light module to control illuminance output, and can be used to various kinds of place in which there are no or lower natural lighting, and need light in 24 hours. For example: the underground garage, basement, building channel, office buildings and office elevator, corridor，etc. There are 4 functions in general. Specific functions can be set according to different places in which are used. Such as the use for underground garages ： we can set as switch adjust power, when someone or vehicles come into the infrared sensed area, LED fluorescent lamp output illuminance and offer normal lighting by rated output power; When no people or vehicles, lamps can self-adjusting to standby power output illuminance after a period of delay (that is to reduce the power consumption of lamps), and provide a low illumination lighting.