This is an authentic ARB pressure switch used to activate electric air compressors used with ARB air lockers. This pressure switch engages (closed circuit) at pressures below 70 PSI and disengages (open circuit) at pressures above 100 PSI. Electrical connection is achieved via 1/4" male spades, air connection via a 1/4" NPT, and the switch can handle up to 5 Amps of current!
WARNING: California's Proposition 65