5X 12V Light Control Switch Photoresistor Relay Module Detection Sensor XH-M131. This module uses a photoresistor to detect light intensity and features a built-in relay for direct load control. Sensitivity is adjustable via potentiometer, allowing users to set the threshold at which the relay activates or deactivates based on ambient light levels. When light falls below the set threshold, the relay is energized; when light exceeds the threshold, the relay is released. Powered by 12V DC, the module includes a voltage regulator and transistor circuitry to ensure stable and reliable operation. Onboard optocoupler provides isolation for the relay drive, protecting the control circuit and enhancing reliability. The module includes four mounting holes for secure and easy installation. Material: Metal Color: Blue Wiring: Included, wire color may vary Module Features: - Photoresistor-based light detection for ambient brightness sensing - Relay switches based on adjustable light threshold - Relay state: - Darker than threshold: relay ON (common terminal connects to normally open terminal) - Brighter than threshold: relay OFF (common terminal connects to normally closed terminal) - Three terminals (common, normally open, normally closed) function as a dual-control switch Electrical Specifications: - Supply Voltage: 12V DC - Operating Current: 100mA - Load Rating: 250V 10A AC or 30V 10A DC (suitable for loads within or below these ratings) Dimensions: 5.3cm x 3cm Quantity: 5 Pieces Package Includes: 5 x 12V Photoresistor Relay Module Light Detection Sensor Light Control Switch Note: Wire color is random and cannot be specified. Package includes only the items listed; other accessories are not included. Due to lighting and display differences, actual product color may vary slightly from images. Measurement error allowed: +/- 1-3cm.