Turn on pressure below 160 PSI,Turn off reach 200 PSI AC 110V / 120V / 240V or DC 12V / 24V (Maximum Current Supported: 20Amp) replace part for Air Compressors D55168 Replacement N003990 2 pack: you will receive 2pcs pressure switch Service life:100000 cycles long working life,please send email to the seller if any issue Air Compressor Pressure Switch 160-200 PSI