Provides automatic temperature control for all types of portable spaceheaters that operate on electricity. It is safe, easy to use and plugsinto an existing 120V outlet. Designed for indoor use, the model 18700thermostat adds safety, comfort and convenience to workshops, garagesand farm buildings. It also can provide winter protection againstdamage caused by freezing waterpipes if your heating system fails whenyou're not home. Capacity is 1800 watts at maximum load, 13.8 amps.Temperature range: 0°F to 100°F. 120VAC with a 3-prong grounded plugand receptacle. Metal housing for heavy-duty use. Should be used withGFCI protected outlet.