This is a photosensitive resistor module, suitable to detect environmental light intensity and ambient brightness. Its sensitivity can be tuned with an on-board potentiometer, where turning it clockwise will increase the sensitivity and increase the detection range.

Features of Photosensitive Resistance Sensor Module

• Comes with a high-quality light dependent resistor (LDR).
• Equipped with an on-board potentiometer to adjust light brightness threshold.
• Digital output
• Fixed bolt hole for convenient installation.
• Uses LM393 wide range voltage comparator.
• LED indicator – ON when ambient light exceeds threshold.
• Operating Voltage is 3.3-5 V
• Dimensions: 3.2cm x 1.4cm