The 1900 series micro differential pressure switches are the most versatile series of products, featuring advanced technology, precise construction, and great value for money. They are designed for HVAC systems but are also used in various other industrial settings. The set points for the 1900 series switches range from 0.07 to 20 inches of water column (1.8 to 508 mm of water column), suitable for air or compatible gases. The set points are easy to adjust, with the adjustment screw protected inside the housing to prevent accidental changes. The product is UL, CE, CSA, and FM certified.

Warning: This product can only be used with air and compatible gases.

● Compact size and repeatability, offering cost-effective switching for many industrial applications

● Set points from 0.07" to 20" in w.c., meeting low-pressure switch requirements

● Set point adjustment knob inside the housing to prevent tampering