Photodiode module is most sensitive to environmental light intensity , generally used for detecting the ambient brightness and light intensity.

Compared with Photosensitive Resistance Sensor, this module has better directionality, can sense light in a certain direction.

When ambient light intensity does not reach the threshold value, the module DO port output high lever; when the ambient light intensity exceeds a set threshold, the D0 output low lever.

Sensitivity Adjustable. Increases detection brightness by adjusting the potentiometer clockwise and decreases by adjusting the potentiometer counterclockwise.

Wiring Instructions: 

VCC ---- "+"

GND ---- "-"

DO  ---- TTL Signal Output

AO  ---- Analog Signal Output

Specification:

Working Voltage: 3.5V-5.5V

PCB Size: 31mm x 14mm (L*W)

Pin Quantity: 4

Pin Distance: 2.54m

Fixed Hole Dia: 3mm