100 Series Mechanical Compact Pressure Switch, Brass Wetted Materials, PI Diaphragm, 1 SPST, Normally Open, 1/8 in. NPT Male, 15 psig to 100 psig 350 psig, Weatherpack Tower, 2-Pin Male. Switch adjustment ranges from vacuum through 6,000 psi depending on model. Standard Brass with NBR diaphragm wetted parts. SPST creep action switch with Silver-plated contacts. CE compliant to suppress Radio Frequency Interference RFI, Electromagnetic Interference EMI and Electrostatic Discharge ESD.