120 Volt Dusk to Dawn Photocell Photoeye Light Sensor Switch - Auto On/Off - Use with Fluorescent, Incandescent or LED Bulbs CONTROL: Automatically turn lights on at dusk and off at dawn. Save energy! TYPE: Switch Type SPST-NC (single-pole, single-throw, normally closed) bimetallic switch. COMPATIBILITY: Use with LED, fluorescent and incandescent bulbs. APPLICATIONS: Controls parking lots and walkway lighting, post lamps, pole lanterns, coach and entry way porch lights WHY US: Every one of our carefully designed and tested products is backed with a minimum 2-year warranty. Enjoy our free returns as well on all your purchases.