Click on the following link for product video demo presentation. https://youtu.be/kr6CZgn7ovs

12V XH-M131 Light Control Switch Relay Photoresistor  Module
Photo-resistor Relay Module Detection Sensor

  This module can be used for light detection, brightness detection, with power indicator (red) and relay pull-in indicator (blue), and with four M3 screw mounting holes, greatly facilitate the installation, the board can be adjusted by potentiometer Sensitivity, built-in relay, do a variety of brightness detection control switch, can be used, such as lights, etc., automatically open at night, during the day automatically extinguished, and other equipment need to be automated.

The module uses 12V power supply, with anti-reverse function, reverse the power supply will not damage the module;
Normally open interface load capacity: AC 0V - 125V / 20A, DC 0V - 14V / 20A; module output has three ports common (COM), normally open (CK), normally closed (CB), three The port is equivalent to a dual control switch, the relay coil has electricity, the common terminal and normally open when the conduction, no power, the common side and normally closed side conduction; COM terminal generally connected to the power supply through the negative,
Through the potentiometer to adjust the sensitivity, by adjusting the potentiometer, set the start relay threshold, when the light is hidden in this threshold, the module relay pull, light this threshold, the relay off;

WEIGHT 21g