Trojan 12520 Hot Scot Well House Heater with Adjustable Thermostat, 450WUse inside the access panels on livestock waterers or well houses. Comes with built in adjustable thermostat. This 450 watt, 120 volt space heater features range from 30 degrees to 150 degrees F. Only 4 amps required. 450watts Compact Low Profile Use in Wellhouses Adjustable thermastat An excellent supplement or replacement heater Use inside the access panels on livestock waterers or well houses Comes with built in adjustable thermostat 120 volt space