QR Code Access Control Converter: MSR009 Small interrupted reader Mini size: 43(L)X15(W)X22(H) mm Interrupted function Battery rechargeable Specification PCB size: 10*5.8*2.5mm Weight: 10g Memory: 2M Byte EEPROM Power supply: Take Power by lithium battery, USB port and directly charging, maintaining 20 more days after fully charging Cards Standard: ANSI, ISO, ABA Track: All 1,2,3 tracks bidirectional readable Data structure: Date + time +’ %’1st …