Dwyer 1911‑0 Compact Low Differential Pressure Switch is part of the Series 1900 family, designed for monitoring low air and gas pressures in HVAC and industrial systems. It features an SPDT switch, a durable silicone diaphragm, and a 1/8" FNPT connection. Built with a zinc‑plated NEMA 1 enclosure, it operates from ‑30° to 180°F and handles up to 45" w.c. continuous pressure with a 10 psig surge rating. UL, CE, CSA, and FM approvals ensure dependable performance in demanding applications.
