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: Automatically turns off when there is light and turns on when it is dark, no manual operation required. This is a waterproof light sensor switch. The sensor detects light and darkness to control the ON/OFF function of the switch. Compatible with LED lamps, energy-saving lamps, fluorescent lamps, incandescent lamps, ventilation fan lamps, and other lighting devices. Automatic control helps prevent lights from being left on accidentally, promoting energy efficiency. Ideal for automatic lighting control in street lights, schools, factories, and similar environments. Waterproof design allows use in outdoor, automotive, marine, and various other 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 for correct wiring. The unit can be installed in any orientation as long as the sensor is able to accurately detect ambient light levels. Color: White + Blue Material: Plastic + Metal Package Contents: 1 x Switch Note: Other items shown in images are not included. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement error allowance is +/- 1-3 cm.