[Upgraded Auto ON/OFF Design] by newest IC, the photocell sensor would automatically turn on your exterior lights at dusk and off at dawn. It operates more intelligently according to ambient lighting levels and environment elements [Easy installation] for your easy and quick assembly. No need to spend more on these gadget [Waterproof Weatherproof]heavy-duty plastic case and perfect sealing design with cover readily withstand the harsh weather like rainy, windy or snowy . Rated with IP65 protection, you could be relieved to use the dawn to dusk sensor in outdoor light, such as post , porch lights or flood lights [Strong compatibility]Compact size helps you easily install it with residential outlet box and most outdoor light fixture. Operating voltage from 120V to 277V, the photo cells for outdoor light is compatible with various kinds of light sources like incandescent, CFL, LED, halogen Material: Plastic colour: black Package Contents: 2 x photocell light sensor 2 x spacer 2 x Locking nut 6 x Wire cap Only the above package content, other products are not included. Note: Light reflection 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.