aftermarket replacement pressure switch. This is a universal pressure switch that fits or comes on many & models of air compressors. This switch has an adjustable unloader pressure release valve (1/4inch compression) & on/off lever. Electrical inlets are on each side of the switch(no bottom electrical inlets) is 1/4inch FPT. Factory setting is adjustable. For ingersoll part#: 23474653-A 23474653 I-R 23474653-R CAP PART#: C2YL9FJ96 Replacement switch pressure switch w/ unloader valve and on/off lever. 4-port. side-wire feed. adjustable unloader. Specs: Cut-In PSI: 145 Cut-Out PSI: 175 PSI Open/Close: 145/175 psi Differential:30 to 40 psi Size:1/4Inch Connection Type:Female NPT 4 PORT Color:Silver Material:Metal Package Contents: 1 x PRESSURE SWITCH Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.