Features 1、Light detection and brightness detection. 2、Detection can be adjusted via potentiometer brightness valve point comes relays. 3、And do all kinds of brightness detection switch. 4、You can control all kinds of street lights automatically turn on at night. 5、During the day and automatically turns off and car supplies control and automation equipment. Specification Features: Light detection and brightness detection, detection can be adjusted via potentiometer brightness valve point comes relays, and do all kinds of brightness detection switch, you can control all kinds of street lights automatically turn on at night, during the day and automatically turns off and car supplies control and automation equipment. Specifications: Power Supply: DC12V Operating Current: Relay after pull‑in: 5V module is less than 50mA Before the Relay Actuation: Less than 5mA Relay output separately, it can control 0‑240V load. Relay Working Mode: NO(normally open) or NC(normall closed) Module Size: 5.3CM*3.1CM*1.9cm Photoresistor Lead Length: 30cm Note: The color of the terminal is random Packaging include: 1 x Photoresistor module Package List