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 state of the switch. Compatible with LED lamps, energy-saving lamps, fluorescent lamps, incandescent lamps, exhaust fans, and other lighting devices. Automatic operation helps prevent lights from being left on accidentally, contributing to energy savings. Ideal for automatic control in street lighting, schools, factories, and similar environments. Waterproof design allows use in outdoor applications such as cars, boats, and other demanding environments. Wiring Instructions: Connect the black wire and white wire to the power supply; connect the red wire and white wire to the load (e.g., light fixture). Incorrect wiring may result in malfunction. Please refer to the product image for correct wiring. The unit can be mounted in any orientation, but ensure the sensor has clear exposure to ambient light for proper operation. Color: White + Blue Material: Plastic + Metal Package Contents: 1 x Switch Note: Other items are not included. Due to lighting effects and differences in display screens, the color of the item may vary slightly from the images shown. Measurement tolerance: +/- 1-3 cm.