RFID2 is a radio frequency identification unit with a built-in WS1850S chip and a working frequency of 13.56MHz.<br> It supports multiple functions such as card reading, card writing, recognition, recording, encoding and authorization of RF cards. Using magnetic field induction technology, non-contact two-way information exchange is achieved, and the information of the induction card is read and verified.<br> It can be used in application scenarios that require information verification, such as access control systems, check-in systems, warehouse goods storage, and community vehicle entry and exit registration<br> application:Smart Home Access Control System,Vehicle management,ntelligent portation,Smart bookshelf<br> Working frequency: 13.56 MHz<br> I2C data rate: Fast mode: up to 400 Kbit/s; High speed mode: up to 3400 Kbit/s<br> ceiver buffer: 64 bytes<br> Supported protocols: ISO14443A, MIFARE, and NTAG<br> Working temperature: -20 ℃ -85 ℃<br> Data retention:Greater than 10 years<br> Reading and writing distance:Less than 20 mm<br> Development platform: for Arduino, for UIFlow (Blockly, Python)<br> 2x LEGO compatible holes<br> The product appearance and printed words may vary depending on the batch, but this does not affect use<br> Colour:As Shown<br> Material:PC<br> Package Contents:<br> 1 x rfid reader<br> Only the above package content, other products are not included.<br> 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.