Automatic Dusk-to-Dawn Photocell Light Sensor Switch - This photoelectric sensor switch automatically turns lights on at dusk and off at dawn. No manual operation is required. The delay function of the outdoor light sensor prevents accidental activation of the light due to passing car headlights. Multi-Voltage Rotating Photocell Sensor - The handle range is 120V and 277V, compatible with LED, CFL, fluorescent, incandescent, and other types of lights, so you can use this photoelectric switch for occasions such as outdoor lighting, external lighting, sidewalk lighting, walkway 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. Simply disconnect the power supply, insert the switch's screw thread into the knock-out hole, and then secure it with a rubber washer and an alloy lock nut. Rated frequency: 50/60Hz Rated load: 500W tungsten, 850VA Power consumption: 1.5VA On/Off level: 5-20Lx on, 20-60Lx off Thread diameter: 1.06 inches Temperature: -40Celsius to +70Celsius (-40Fahrenheit to +158Fahrenheit) color: Black Material: plastic Package Contents: 2 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 +/- 1-3 cm.