Dwyer 1950P-2-2F is an explosion-proof differential pressure switch suitable for air and non-combustible gases. It has a temperature range of -40 to 140°F (-40 to 60°C), NEMA 3 (IP54) enclosure rating, and 3 screw type electrical connections. The switch has a single-pole double-throw (SPDT) configuration and a diaphragm in a vertical mounting position. It can handle pressure limits of 35 psi (2.41 bar) for continuous use and 50 psi (3.45 bar) for surge applications. With a 1/8" female NPT process connection, it is designed for hazardous locations and has an electrical rating of 15 A @ 125, 250, 480 VAC, 60 Hz. The set point can be adjusted using a screw on the top of the housing.