DC 5V RFID Reader Wireless Module 125KHz EM4100 8CM UART 3Pin-UART interface
WIFI Module. Signal Generator. Signal Transmitter. Keep away from interference source, and strong interference signal may affect card reading. For example: the data received by serial port tool is 02 0A 02 2E 00 B6 D7 B5 F2 03, then.