M5Stack RFID2 Unit The RFID2 unit is a radio frequency identification device operating at 13.56 MHz, equipped with a built-in WS1850S chip to support multiple RFID functions. Core Features Magnetic field induction technology → enables non-contact, bidirectional data exchange Read & write card data Card recognition & authentication Information recording RF card encoding → supports authorization & secure access Applications Access control systems → grant entry to authorized personnel Event & facility check-in → efficient registration & attendee identification Warehouse management → track goods entry, storage & inventory control Community vehicle access → secure entry/exit for residents & visitors Product Features Operating frequency: 13.56 MHz I2C data rate: Fast mode: up to 400 Kbit/s; High-speed mode: up to 3400 Kbit/s Transceiver buffer: 64 bytes Supported protocols: ISO14443A, MIFARE and NTAG Working temperature: -20℃-85℃ Data storage:> 10 years Reading distance:
