Warrendale, Pa.— Models 31D and 32D solid state pressure switches have no moving parts or mechanical contacts enabling them to operate up to 100 million cycles. They handle pressure ranges from vacuum to 10,000 psi for gases or liquids. Digital display shows real-time pressure and permits switching point calibration. Features include LED status indication, 1 A switching capacity, and adjustable electronic damping. Optional 0-10 V or 4-20 mA output provides a secondary pressure transducer function. Norgren Herion USA