Icp Heil-Quaker 3900020801 Air Sensor

The Icp Heil-Quaker 3900020801 Air Sensor is a sensing component that monitors air temperature and delivers resistance-based input to the control circuit for regulating equipment responses. As air conditions change, the sensing element continuously varies its electrical features allowing the controller to interpret measured values and adjust system sequences accordingly. Inserted through the designated air passage so the sensing tip remains directly within the airflow, it enables proper temperature monitoring while HVAC systems regulate air movement through the equipment. The unit supplies consistent feedback to the control board, supporting precise temperature-based decisions and coordinated operation of related control components.