Using High Integrated Read-write Chip as the Base Station of Radio Frequency. Support ISO14443 TYPE A standards, standard cards.MF0: Ultralight, Ultralight C, NTAG203, NTAG213; MF1: S50, S70, FM11RF08. The module integrates automatic card searching, reading, writing and initializing electronic wallet,The user uses the set to simply operate the card. Ultra low static power consumption: less than equal 30 . Support serial port protocol (UART TTL): serial bit data (8), check bit (none), stop bit (1), baud rate can be set, default: 19200. Colour:green Material:plastic The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 x RFID Reader 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.