Dwyer 1911-0 Compact Low Differential Pressure Switch is designed for air and non-combustible compatible gases. It has a temperature range of -30 to 180°F (-34 to 82.2°C), with a pressure limit of 45" w.c. It features a single-pole double-throw switch type with a 15 A electrical rating. The set point adjustment is done through a screw-type mechanism inside the conduit enclosure.