HGN Series AC Solid State Relays, adapting ignition-proof engineering plastic cover, filled with EPOXY, screw thread connection, have the features of hard structure, vibration-proof capability high, input current small convenient to interface with terminals of computer and various digital tele-control circuit. This series products are widely used in the fields of petrochemical equipment, foodstuff producing mechanism, textile and plastic mechanisms, packaging machines, tool numerical control, gymnasium equip. Speciality be the same with canker, aquosity request prevent explode scurvines circumstance, and often switch of occasion .