1. Working frequency: 13.56Mhz
2. Support protocol: 14443A protocol such as MF\S50\S70
3. Working voltage: 5V
4. Working current: 100mA
5. Card reading distance: 0-30mm (front/back), 0-10mm (side reading)
6. Card reading time: less than 100mS
7. Card reading speed: 0.2S
8. Reading distance: 0.5S
9. Weight: 20g
10. Size: 35mmx35mmx7mm (without interface)
11. Operating system: Android
12. Windows system: WinXP, Win7, Win10, etc. (need to transfer via OTG cable)
13. Output format: silent 10-digit decimal (4 bytes)
14. Android system requirements such as mobile phones: OTG function
15. If the reading distance of the card reader is too long, it will cause the card reading to be unstable or fail. Avoid reading the card in a critical state (the distance just to be able to read the card). At the same time, two adjacent card readers will also interfere with each other
16. There are many factors that affect the card reading distance. Different protocols, different antenna designs, surrounding environments (mainly metal objects), and different cards will all affect the actual card reading distance
