The Model AFS-460–DSS is a general purpose airflow proving switch designed for 120 VAC HVAC and Energy Management applications where dual manual reset switches with SPST contacts are needed. It may be used to sense positive, negative, or differential air pressure.

The plated housing contains a diaphragm, a calibration spring, and 2 snap-acting switches with a single manual reset button.

The sample connections located on each side of the diaphragm accept 1⁄2″ (6.35 mm) OD tubing via the integral compression ferrule and nut.

An enclosure cover guards against accidental contact with the live switch terminal screws and the set point adjusting screw. The enclosure cover accepts two 0.5″ (12.7 mm) conduit connections. The manual reset button is located on the top surface of the enclosure cover.