Johnson Controls A19AUC-1 SPDT Remote Bulb Temperature Control -30°F/50°F, 6Ft Capillary ,X-Prf, 5F Differential

The Johnson Controls A19AUC-1 SPDT Remote Bulb Temperature Control is a single-stage electromechanical switch that is used to maintain a set temperature in hazardous areas. It uses a distant bulb that is full of liquid and which expands or shrinks depending on the temperature. This expansion or contraction runs through a thin capillary tube to a switch mechanism. When the set temperature is attained, the switch turns on or off your heating or cooling equipment depending on the wiring of the switch. this is particularly useful where the control unit has to be located in a convenient area but the temperature measurement may be in a potentially explosive area.