xy400_ib intrinsic safety card reader is composed of a card reader installed in a dangerous area and a safety barrier installed in a safe area. xy400_ib the intrinsically safe card reader has the characteristics of safety and reliability, simple structure, small size, light weight, and convenient maintenance. it is an ideal explosion-proof electrical equipment, which can be widely used in petroleum, chemical, pharmaceutical, paint, military, civil explosions, etc. in the access control system of dangerous places with explosive gas and dust.