Honeywell Pressure Switch, 5000 Series, Silver alloy & Gold Plated Contacts, Contact Setting Range 51 PSI to 90 PSI, Operating Pressure 250 PSI, Standard Factory Set Point 90 PSI, Standard Seal - Nitrile O-ring, Diaphragm - Polymide Film, Operating Temperature -40 oC to 120 oC [-40 oF to 250 oF], Electrical Terminals 1/4 in Blade, 1/8 -27 NPT Male Thread, Contact Arrangement SPST-NC.