A28AA-4 | TWOSTAGETEMPCONTROL | Johnson Controls

A28AA-4 Johnson Controls The A28AA-4 coil-bulb assembly from Johnson Controls is a robust and reliable component for HVAC applications. Its 30/110F temperature range and 2-SPDT (single-pole, double-throw) configuration make it suitable for various cooling and heating systems. The coil-bulb is designed to operate on 24V AC power and has a compact size for easy installation. It acts as a sensing element, detecting temperature changes and transmitting the information to the control system, ensuring precise temperature regulation and efficient system operation. Our HVAC supply store offers the best prices and fast shipping for your products!