It is the first dual shutter protection card reader in the world. The first shutter is mechanical with dust and foreign things prevention function, and the other one is for motor protection. The main body is composite plastic with high temperature, abrasion and aging resistance, and two sides of card movement channel are embedded with stainless steel metal. It makes product with advancement in strength and precision. Module installation structure is convenient for customers to maintain product. Elaborate design and part combination makes product with fresh appearance and its precision meets or overpass the same product all over the world. Excellent circuit design takes multiple protection functions into consideration. It is a card reading equipment that can read or write many types of cards, supporting 8 pieces SIM card operation. https://www.szrcloud.com/card-re...-driven-card-reader.html