The internal environment with automatic illumination detection circuit, shut down during the day and open during the night automatically. Using three-wire system, compatible with resistance. Suitable for the LED lighting and outdoor monitoring, advertising , garden lights and other automatic switching lights control. Control of the lighting time according to the illumination value of the environment automatically. Saving energy, , safe and reliable. Condiiton: Wiring: Export three-wire system Voltage range: 12V 24V 36V 48V Supply voltage: 8V to 50VDC (module normal operating voltage range) Standby current: 0.3ma (silent state) Output power: High power, load current 3.5A, the pressure drop is negligible. Power consumption: 0.6Wmax Anti interference delay: about 0.6 second Sensitivity: 5-10LX on 30-60LX off Environment temperature: -40Celsius - +70Celsius Related Humidity: 99% RH Working Life: 6500 cycles Detector waterproof grade: IP 66 Use of the environment, temperature: Can not be installed in a gas environment, minus 25 to 70 degrees. Leads Length: 150mm colour:Black Material:ABS size: 40 x 15.6 x 20 mm Package Contents: 2 x Photocell Switch. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.