Dwyer 1823-20 is a low differential pressure switch designed for general industrial use. It has a 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 circuits. Ideal for air and non-combustible gases, it has a diaphragm mounting orientation and a pressure limit of 10 psig (68.95 kPa) continuous, 25 psig (172.4 kPa) surge. The switch type is single-pole double-throw (SPDT) and the set point can be adjusted with a screw type inside mounting spud. Electrical rating is 15 A @ 120-480 VAC, 60 Hz.