Dim and Alternate Photo Sensor Switch - This photoelectric sensor switch automatically turns on the light at dusk and turns off at dawn. No manual operation is required. The delay function of the outdoor light sensor prevents accidental triggering of the lights due to the headlights of passing cars. Multi-voltage rotating photo sensor-The handle range is 120V and 277V, compatible with LED, CFL, fluorescent, incandescent and other types of light bulbs, so you can use this photoelectric switch sensor in most occasions, such as outdoor lighting, external lighting, Pavement lighting, pavement lighting and doorway lighting. Photo light sensor - surge protection, heavy-duty body, IP65 waterproof, AC 120-277 input voltage. Easy to install - With a rotating installation, this outdoor light controller can be easily installed on a precise focusing light. Just disconnect the power supply, put the screw wire of the switch in the knock hole, and then fasten it with a rubber washer and a zinc alloy lock nut. Rated Frequency: 50/60Hz Rated loadings: 500W Tungsten,850VA Ballast Power Consumption: 1.5VA On/Off Level: 5-20Lx on, 20-60Lx off Threaded Diameter: 1.06 inch Ambient Temp: -40Celsius to +70Celsius(-40Fahrenheit to +158Fahrenheit) colour:Black Material:plastic Package Contents: 2 x Photocell Sensor Switch / 4 x Photocell Sensor Switch 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.