Woods 59407 Indoor Light Sensor Outlet Control Plug-In this light control with photocell-your lamp can turn on at night and off in the morning. plugs into standard outlet-works with 2 prong plugs. commonly used when you want a lamp to turn on at night automatically, then turn off in the morning. The front of the unit has a photocell(light sensor) that activates under low-light conditions. ideal for bedrooms, offices, and more. 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