Allied Precision Temperature Controlled Outlet (TCO35) provides the narrowest On/Off window available to maximize energy savings. This unit is controlled by a microprocessor with temperature sensors. It is easy to use, just plug it into an existing power outlet and plug the device you wish to control and it will automatically detect the temperature and the power it requires. This equipment can be used indoors or outdoors (when not directly exposed to rain or snow). Get one now and see for yourself how much energy you'll save when you use it.