Product Name: Photo Switch Input Voltage: DC 12V Max Load Current: 10 A Body Size: Approximately 4.3 cm x 4.2 cm x 3.5 cm Function: Turns off when there is light, turns on when there is no light; no manual operation required. This is a waterproof light sensor switch. The sensor detects light and darkness to automatically control the ON/OFF state of the switch. Compatible with LED lamps, energy-saving lamps, fluorescent lamps, incandescent lamps, ventilation fan lamps, and other lighting devices. Automatic operation helps prevent lights from being left on accidentally, contributing to energy savings. Ideal for automatic control in street lights, schools, factories, and similar environments. Waterproof design allows for use in outdoor, automotive, marine, and other diverse applications. Wiring Instructions: Connect the black wire and white wire to the power supply; connect the red wire and white wire to the load (such as a light). Incorrect wiring may prevent proper operation. Please refer to the product image and wire accordingly. The switch can be installed in any orientation, but ensure the sensor is exposed to ambient light for accurate detection. Color: White + Blue Material: Plastic + Metal Package Contents: 1 x Switch Note: Other items not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.