Dwyer 1626-1 is a single and dual pressure switch with a temperature range of -30 to 130°F (-34.4 to 54.4°C). It has 3 screw type electrical connections and is suitable for air and non-combustible compatible gases. The diaphragm should be mounted in a vertical position, and it has a maximum pressure limit of 50 in. w.c. (12.44 kPa) continuous and 2 psig (13.79 kPa) surge. The process connection is 1/8" female NPT. It has a repeatability of ±1% and an electrical rating of 15 A @ 120 to 480 VAC, 60 Hz. The switch type is SPDT or (2) SPDT, depending on the model. Set point adjustment is done with a screw.