Kleinn Tank mount pressure switch 1/4In M NPT - 90 PSI on/ 120 PSI off

Kleinn Automotive Accessories Heavy duty tank-mount pressure switch 2 Male spade style terminal connections works with 6260RC Compressor, turns on at 90PSI and off at 120 PSI, a 5 % PSI variance possible, use a 145 PSI Safety relief valve with this, SKU 52145. The pressure switch receives 12 volt ignition power and sends signal to a required SPDT 30 amp relay (Model 340) that turns the compressor on and off automatically 90 PSI On / 120 PSI Off. We recommend the safety relief valve (52145) on the tank will release a burst of air when the pressure switch fails, when you hear that, kill power to the compressor so that it doesn't burn itself out, then replace the pressure switch.