DWYER 1900-5-MR 1.4-5.5" WC, Compact Differential Pressure Switch, Low Differential, Manual Reset, Series 1900

The Dwyer 1900-5-MR Compact Low Differential Pressure Switch combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications. For air and non-combustible compatible gases, 19005MR switches have set points from 1.4 - 5.5" w.c.. Set point adjustment is easy with range screw located inside conduit enclosure. Internal location helps prevent tampering. UL, CE and CSA listed, and FM approved.|The 1900-5-MR also includes a special snap switch which latches on pressure increase above the setpoint. Switch must be manually reset after pressure drops below the setpoint. Available on -1, -5, -10 or -20 ranges only.

• Range: 1.4 - 5.5" W.C.
• Manual Reset
• 4% set point repeatability
• Internal location helps prevent tampering
• Set point adjustment is easy with range screw located inside conduit enclosure