★ USED FOR COPYING: This device is used to copy and duplicate the 125 Khz EM4100 ID Card for backup purpose. Excellent program algorithm and circuit design are adopted. You can copy all ID(EM4100) Cards with this RFID copier. ★ ADVANCED AND PORTABLE: ID (EM4100) Access Control Card Replicator Copier with Premium Quality. Mini-type handheld mold, ergonomic characteristics, easy to carry. Adopted advanced chip, the product integration is higher, more stable and ★ SIMPLE Excellent program algorithm and circuit design reduce the power consumption and prolong battery life. Designed with a "Read" and "Write" two buttons, easier to operate. You can copy all ID(EM4100) cards with this RFID copier ★APPLICATION AREAS: Portable size, easy to carry. Such a nice product, don't miss it! Widely used at community, school, office and other access control needed places. ★AFTER-SALES SERVICE: We solemnly promise you that if you find problems with the product itself, you can contact us in time. we will definitely give you a reply in the first place and return it for you. please feel free to use it., Manufacturer: Sonew