Johnson Controls A19AGC-77 SPDT Temperature Control -30°F-100°F

The Johnson Controls A19AGC-77 is a single-stage, line voltage mechanical temperature control used for heating, ventilation, and air conditioning temperature control. It consists of a bulb which is connected to the main body by a capillary tube and a remote bulb sensor. When the temperature around the sensor increases or decreases, the liquid inside the sensor changes its volume and this change affects a switch that regulates your HVAC equipment. The battery of A19AGC-77 is fully operational between a range of -30°F and 100°F, which is highly convenient. This simple temperature control solution has an adjustable differential, which means that you can set the amount of temperature difference before the system initiates.