Dwyer 1831-2-RA-S is a low differential pressure switch designed for general industrial service. It has a wide temperature range of -30 to 180°F (-34 to 82.2°C) and features 3 screw type electrical connections for common, normally open, and normally closed configurations. Suitable for air and non-combustible compatible gases, with a diaphragm in vertical position mounting orientation. The switch has a pressure limit of 10 psig (continuous) and 25 psig (surge), with a 1/8" female NPT process connection. It has a repeatability of ±2%, an electrical rating of 15 A @ 120-480 VAC, 60 Hz, and a single-pole double-throw (SPDT) switch type. The set point adjustment is made using a screw type inside mounting spud. Note: Wetted materials should be confirmed with the factory.