Pressure Switch, Air Compressor, Manual Switch Action None, (1) Port, 1/4 in FNPT, Pressure Switch Factory On/Off Setting 80/100 psi, No Pressure Switch Unloader, Pressure Switch Differential 20 to 45 psi, Pressure Switch Range 20 to 105 psi, Pressure Switch Electrical Contact Form DPST, Pressure Switch Action Standard, NEMA Rating 1, Series MDR11, HP @ 1 Phase - 120V 2 hp, HP @ 1 Phase - 240V 3 hp, Temp. Range -22 Degrees to 257 Degrees F, Standards CSA Certified, UL Listed