M5stack Mini RFID Reader/Writer 2 M5stack RFID Radio Frequency Identification Sensor RFID Radio Frequency Identification Sensor _x000D_ _x000D_ _x000D_ _x000D_ RFID2 is a radio frequency identification unit. Built-in WS1850S chip, working frequency is 13.56MHz. Supports reading card, writing card, recognition, recording, and encoding RF card Multiple functions such as authorization and authorization. Use magnetic field induction technology to realize non-contact two-way information interaction, read and verify the information of proximity cards. _x000D_ It can be used in access control systems, check-in systems, warehouse goods entry and storage, and community vehicle entry and exit registration needs Application scenarios for information verification. _x000D_ RFID2 compared to the previous generation RFID UNIT only makes the replacement of read and write IC (RC522WS1850S), there is no difference in function. _x000D_ _x000D_ Product Features _x000D_ 1. Operating frequency: 13.56 MHz _x000D_ 2. I2C data rate: Fast mode: up to 400 Kbit/s; High-speed mode: up to 3400 Kbit/s _x000D_ 3. Transceiver buffer: 64 bytes _x000D_ 4. Supported protocols: ISO14443A, MIFARE and NTAG _x000D_ 5. Working temperature: -20-85 _x000D_ 6. Data storage:Greater than 10 years _x000D_ 7. Reading distance:Less than 20 mm _x000D_ 8. Development platform: for Arduino, for UIFlow(Blockly, Python) _x000D_ 9. 2x LEGO compatible holes _x000D_ Applications: _x000D_ Smart home access control system _x000D_ Vehicle management _x000D_ Smart transportation _x000D_ Smart bookshelf _x000D_ Colour:White _x000D_ Material:Plastic _x000D_ _x000D_ Package Contents: _x000D_ 1 * RFID sensor _x000D_ _x000D_ Only the above package content, other products are not included. _x000D_ Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_