Dwyer 1823‑1 Low Differential Pressure Switchis a durable, USA‑made mechanical air‑pressure switch designed for HVAC and automation systems. It features a vertical diaphragm, Type 1 indoor enclosure, and handles up to 10 PSI (25 PSI surge). Rated for temperatures up to 180°F (82°C), it supports 15A at 125/250/480 VAC and uses 14 AWG copper wiring. Ideal for air proving, filter monitoring, and duct pressure control.
