Johnson Controls A19DAC-1 SPDT Temperature Controller 100/240°F Strap-On 10" Differential

The Johnson Controls A19DAC-1 is a remote bulb temperature controller that is used to control the temperature of HVAC systems.. This particular sensor measures the change in temperature and then sends a signal to the controller. The controller then changes the electrical circuits SPDT in accordance with the temperature range set at 100/240°F and 10 °F differentiae. Such on/off switching can alternate heating or cooling equipment so as to maintain the best temperature. As we shall point out in the following, this remote bulb design has a number of advantages. Also the temperature sensor is in direct contact with the equipment in order to obtain accurate temperature value. Secondly, the physical location of the controller is out of touch with the environment that has the potential to interfere with its functioning.