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. 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. RFID2 compared to the previous generation RFID UNIT only makes the replacement of read and write IC (RC522WS1850S), there is no difference in function. Product Features 1. Operating frequency: 13.56 MHz 2. I2C data rate: Fast mode: up to 400 Kbit/s; High-speed mode: up to 3400 Kbit/s 3. ceiver buffer: 64 bytes 4. Supported protocols: ISO14443A, MIFARE and NTAG 5. Working temperature: -20-85 6. Data storage:Greater than 10 years 7. Reading distance:Less than 20 mm 8. Development platform: for Arduino, for UIFlow(Blockly, Python) 9. 2x LEGO compatible holes Applications: Smart home access control system Vehicle management Smart portation Smart bookshelf Colour:White Material:Plastic Package Contents: 1 * RFID sensor Only the above package content, other products are not included. 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.