Telemecanique Sensors Air, Hydraulic Oil, Non-Corrosive Gas, Non-Corrosive Liquids Differential Pressure Switch. Pressure Range: 1.5 → 7.5 (Decreasing) psi, 3.5 → 15 (Differential) psi. Output Type: SPDT-NO/NC. Supply Voltage: 240 V ac, 250 V dc. Minimum Pressure Reading: 1.5 (Decreasing) psi, 3.5 (Differential) psi. Maximum Pressure Reading: 15 (Differential) psi, 7.5 (Decreasing) psi. Process Connection: 0.25 in NPTF. Electrical Connection: 0.5 in NPT. Minimum Operating Temperature: -10°F. Maximum Operating Temperature: +185°F. Accuracy: <4 (Repeat) %. Maximum Current: 6 A. Housing Material: Die Cast Aluminium Alloy 380. Mounting Type: Cable Mount. MPN: 9012GAW4