Woods 59405 Indoor/Outdoor Light Sensor Socket, Screw-In Automatic Switch The Woods 59405 Indoor/Outdoor Socket with Photocell automatically turns on outdoor lights at dusk and off at dawn. Simply insert this socket-unit into your light socket, install the bulb and that"s it-let the light sensor(photocell) take care of the rest. Perfect solution for porch lights, floodlights, security lamps or landscape lighting. The socket can also be used indoors for lamps and other lighting fixtures. The Indoor/Outdoor Socket with Photocell helps save energy and less frequent bulb changes. TOLL FREE HOTLINE, 1-800-561-4321. If you have immediate questions about application, installation, troubleshooting, or a damaged component, please call CCI Consumer product hotline at 1-800-561-4321 or email questions to: consumer.service@colemancable.com