Dwyer 1900-10-MR is a compact low differential pressure switch suitable for air and non-combustible compatible gases. It operates in temperatures ranging from -30 to 180°F (-34 to 82.2°C) and has a pressure limit of 45" w.c. (11.2 kPa) continuous, 10 psig (68.95 kPa) surge. With a single-pole double-throw switch type and an electrical rating of 15 A @ 120-480 VAC, it is ideal for various applications. This switch features a diaphragm in a vertical position and has a set point adjustment using a screw type inside a conduit enclosure of 3 screw type electrical connections. Repeatability is ±3%, and it has a process connection of 1/8" female NPT.