Pressure Switch,Air Compressor,Manual Switch Action Auto/Off,(4) Port,1/4 in FNPT,Pressure Switch Factory On/Off Setting 100/125 psi,No Pressure Switch Unloader,Pressure Switch Differential 25 to 65 psi,Pressure Switch Range 25 to 160 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