Explosion -proof access card reader

The utility model discloses an explosion -proof access card reader, including card reader control circuit, explosion proof enclosure, cable conductor, wherein, card reader control circuit seals in explosion proof enclosure, and the cable conductor passes the electricity connection that explosion proof enclosure realized the explosion proof enclosure inside and outside. Access card reader's circuitstructure among the prior art has been improved to all adopt the fluid sealant to seal all circuitss, be used for the explosion -proof environment will not to produce the spark, effectively improvedthe security. Explosion -proof entrance guard adopts this ampere of design circuit, does not have great electric capacity and electric current. Explosion -proof entrance guard adopts permanent introduction cable mode, this system design adoption dual fail -safe design on the guard grating in the access explosion -proof control box, explosion -proof entrance guard's the intrinsic safety circuit design and the protection des