... Controller, Switches, Temperature Switch, Air Heater Thermal Switch, Sensor, Heater Thermostat, Heater, Water Thermostat, Water Heating System, Oven ... Thermometer, Thermostat Wiring, HVAC, HVAC Thermostat, Air Heater FanPRINCIPLE OF OPERATION:With temperature rise, the expansion ... .Thermal Fuse, Temperature Sensor, Regulator, Terminal, Heating Element, SPDT, KSD, KST, Bimetal Thermostat, Thermtrol, ...