TEMT6000 Ambient light sensor module
The TEMT6000 is made up of a single phototransistor, which acts just like a simple NPN transistor. The greater is the incoming light on the Base, the more the current flowing from the Collector to the Emitter. The sensor only works in the visible spectrum (390–700 nm). The Infrared, ultraviolet ray or any other light will have no effect on the sensor.