An excellent dust sensor until dawn that turns the lights on at dusk and turns off again at dawn. It will switch to 1200w tungsten or 2x400w high-pressure sodium-metal halide lamps. This super small unit will run at a temperature of -20 to +70 degrees1.2w parasitic power. Suitable for outdoor use2 years manufacturers guaranteeTechnical SpecificationsVoltage: 230-240vLoad power: 1200w, 2x400w HPS/metal halide lampMaximum current: 10A Light Capacity: lt on; 20 lux-offgt; 80 lux Switching delay: 10 - 15 seconds to avoid false switching by car headlights etc Height: 135mm Width: 73mm Maximum current 10A but recommended maximum load 1200w for increased service life. Theoretically, like similar 10a photoelectric switches mean they are capable of 2000w, but this would mean a shorter life of the relay.1 X external Lightswitch 1 X set of screws1.