RDM 125KHz card mini-module is designed for reading code from 125KHz card compatible read-only tags and read/write card . It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.

Features

• Support external antenna
• Maximum effective distance up to 50mm
• Less than 100ms decoding time
• UART TTL interface
• Support EM4100 compatible read only or read/write tags
• Built-in external bi-color LED and buzzer driver
• Small outline design

Including: External Antenna *1

Note:Module will notify whenever 125khz tag approaches, tag serial number will be send via TX pin. Easy way for a RFID module on MCU projects or PC connnection via UartSB.