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What is the switch action for this thermostat
25% FS accuracy
Measure the distance from the mounting surface to the tip of your existing probe
and a full set of eight stainless steel bolts and hex nuts
Avoid using RTV or other sealants unless specifically directed by the manufacturer's service bulletin
Aprilaire 4592 Airflow Proving Switch 322838-754 What is the switch actionThe Aprilaire 4592 Airflow Proving Switch is a genuine OEM airflow safety switch engineered to provide precision monitoring of pressure differentials within your HVAC system. This Aprilaire model 4592 serves as a critical differential pressure switch, ensuring that secondary equipment like whole home humidifiers or electronic air cleaners only activate when proper blower operation is detected. By acting as an HVAC airflow sensor, it prevents equipment
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