Air compressor pressure switch suitable for small electrically driven air compressors, includes a two way pressure release valve. Contacts open on rising pressure. 2 Pole, NEMA Type 1 indoor inclosure, 1/4" NPSF internal pressure connection, diaphragm actuated, UL/CSA Listed, RoHS compliant. Non adjustable differential 30 PSIG Adjustable Cut out range 70-150 PSIG 1 HP @115Vac, 2 HP @230Vac. Individially boxed.