Feature:Saving energy, long life, safe and reliable.Using three-wire system, compatible with resistance.The internal environment with automatic illumination detection circuit, shut down during the day and open during the night automatically.Control of the lighting time according to the illumination value of the environment automatically.Suitable for the LED lighting and outdoor monitoring, advertising gallery, garden lights and other automatic switching lights control.Specification:Model: NK-B / E277Wiring: Export three-wire systemRated voltage: 120V 220V 240V 277VVoltage range: 80VAC-277VAC 50 / 60HzStandby current: 0.5mA.Output power: high power. Allow load of 800WUse of the environment: Temperature: minus -25 to +70 degrees.includes:1 x Photocell Switch