Function: Energy saving, long lifespan, safe and reliable. Uses a three-wire system for resistance. Automatically controls lighting based on ambient light levels. Features an automatic lighting circuit for the internal environment, turning off during the day and automatically turning on at night. Suitable for LED lighting and outdoor surveillance, advertising galleries, garden lights, and other automatic control lights. Specification: Model: NK-BB / F50 Color: Black Voltage Range: 12V, 24V, 36V, 48V Supply Voltage: 8V to 50VDC (module's normal operating voltage range) Standby Current: 0.3mA (silent state) Power: High power. Load current 3.5A. Voltage drop is negligible. Environmental Temperature: 25 ~ 70 Note: Please allow 1-3mm error due to manual measurement. Please make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1x photocell switch