THIS IS A BRAND NEW HEAVY DUTY PRESSURE SWITCH 95-125 W/ A FOUR PORT CONNECTION TYPE & 25 AMP CONTACTOR. THIS SWITCH COMES WITH AN UNLOADER AND ON/OFF LEVER. 4 Port connections allow you to connect multiple accessories to your pressure switch. example: safety valve, regulator, gauge etc. unused ports can be plugged REPLACES FURNAS... SQUARE D.....& MANY OTHER MANUFACTURERS. PRESSURE: Factory Preset 95-125 (can be adjusted down to 80-100 or up to 140-175) DIFFERENTIAL: 25-35 PSI PORT: 1/4" (NPT) FOUR PORT FEMALE AMPS: 25 AMPS @ 110 OR 230 or 460 VOLTS... SINGLE OR THREE PHASE THIS PRESSURE SWITCH IS MANUFACTURED IN TAIWAN.... NOT CHINA