Photoelectric design: photo eye light sensor is reliable and quality, weatherproof and anti-rust, stable and safe, you can use with confidence; Built-in external photosensitive switch, also applied as a small and rainproof street light controller photoelectric switch Intelligent detection design: this light sensor photocell turns on your exterior lights at dusk and dawn, automatically control lighting according to ambient lighting levels; The internal design has an automatic ambient light level detection circuit that automatically switches off during the and on at night Waterproof to withstand bad weather: equipped with a waterproof cap, photo eye sensor for outdoor lights is designed to double protect the sensor lens, assists the conversion to work better in harsh environments, like rainy, windy, snow and so on Multiple compatibility: light switch light sensor's voltage is 120V AC, can be compatible with most lamps, such as incandescent, fluorescent, CFL, HPS, LED; Remember that LEDs operate on DC power, other voltages are not suitable Broad utilization: dust to dawn sensor features time-delay detection circuit, accurate detection of natural light, no accidental light, such as oncoming traffic lights, can be applied to street lights, domestic lights, factories, highways and so on colour: black Material: ABS Package Contents: 1 set x Photoelectric switches(3pcs) Only the above package content, other products are not included. Note: Light shooting 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.