EM4100 125Khz RFID Card Read Module, RDM6300, RDM630, UART

Main Product link

https://www.electrodragon.com/product/125khz-em4100-rfid-card-read-module-rdm630-uart-output-arduino-shield/

Documentation:

https://w.electrodragon.com/w/RDM6300

Order keys or cards:

https://www.electrodragon.com/product/em4100-125khz-rfid-keys/

https://www.electrodragon.com/product/em4100-125khz-rfid-card-compatible-with-rdm630/