The CJMCU-TEMT6000 Ambient Light Sensor uses a phototransistor that closely emulates the human eye's spectral response. It detects light intensity and converts it into an analog voltage signal, which can be read by an Arduino or other microcontrollers.
Phototransistor
Ambient Light Sensor
3 mm
14 mm
5 × 3 × 2 cm
0.005 kg
2 g
8 mm