Great for running heaters, de-icers and other heated products in the winter. This outlet turns on when the air temperature hits 35 degrees or below to power your heated items when the temperature is inching towards freezing. When the temperature reaches 37 degrees, the outlet powers itself down, which prevents unnecessary power usage by your heated buckets, bowls and similar. It can also be used to turn on a lamp to signal a freeze warning. The TCO35 offers the narrowest on/off window available to maximize energy savings. While other thermally-controlled outlets may turn on at 35 degrees F, they don't actually turn off until 50 degrees F or more...which means those units might turn on in November and not turn off again until April. The Temperature Controlled Outlet is microprocessor-controlled with temperature sensors accurate to within 0.1 degrees F. Simply plug the Temperature Controlled Outlet into an existing outlet and plug in the device you wish to control. It can be used indoors and outdoors when not directly exposed to rain or snow. Can be plugged into any standard three-prong outlet. Operation indicator light lets you know when it's powered on. 120 Volts, 60 Hz, 15 Amps Turns on at 35 degrees, turns off at 37 degrees, saving energy and money by preventing unnecessary power usage of heat lamps, heaters, de-icers, etc. Microprocessor controlled provides narrow 2-degree window Power-on indicator light Engineered for outdoor safety, and can be used indoors or out.