HGL Series Solid State Relays, adapt ignition-proof engineering cover, filled with EPOXY, PCB mounting, standard modulus. This series have the features of noiseless switching, no contact dithering, no electric arc, long life, high reliability comparing with electromagnet relays. Input current small convenient to interface with terminals of computer and various digital telecontrol circuit. This products are widely used in the fields of petrochemical equipment, foodstuff-producing mechanism, packaging machines, textile and plastic mechanisms, tool numerical control, gymnasium e qup. Specialities be the same with canker,aquosity request prevent explode scurvines circum-stance, and often switch of occasione .