GEMS PDCA-4 Adjustable Pressure Switch Pdca-4-4M-C-El 1000 - 3500 psi

Pdca-4 brand new in the box, part# pdca-4-4m-c-el. GEMS /PDI PDCA-4 Adjustable Pressure Switch Pdca-4-4M-C-El 1000 - 3500 psi range. SPDT switch ( one normally open or one normally closed switch ) 3 wires, common NO and NC. 1/4" male threaded fitting. Pdca is the part number series, the 4 is the pressure range - the 4m is the pipe connection type, the C is switch type and that is "changeover" whatever that means, and the el is the electrical connection type. So if you have a PDCA-4 BLA BLA BLA this switch we have is compatible. Look at your electrical connections and the fitting and see if they are the same or compatible. These adjust with a small allen wrench, there is a plastic plug you pop out on the end to make the adjustment. This is all the info we have on these and we do not have any other PDI / gems pressure sensors.