Johnson Controls A19AAA-49 Temperature Controller 6ft Open low SPST -30°F to 100°F

The Johnson Controls A19AAA-49 6ft Open low SPST temperature control switch is, component used in the HVAC systems to control the temperature. This switch functions within the temperature range of -30°F to 100°F making it possible to control temperature in heating, cooling, and refrigeration systems. Using an SPST configuration, its operation is based on the opening or closing of the circuit in response to changes in temperature and switches on or off heating or cooling equipment. Because it only operates when necessary, its responsiveness helps save energy and shield the equipment from the impacts of extremely high or low temperatures.