Flexible Signal Input: Jumper-selectable 2-10VDC or 4-20mA analog control accommodates various automation protocols

the bimetal disc in the limit switch may have weakened over time

This product is the electrical coil and junction box assembly only

Universal Application: Rated for use with SWG/CV power venters across gas-fired furnaces

the unit utilizes an 11-pin octal socket style for rapid installation and maintenance

Aprilaire 4592 Airflow Proving Switch R-22 Flexible Signal Input: Jumper-selectable 2-10VDCThe 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