RDM6300 125kHz RFID Card Read Module With EM4100 Support For Arduino And UART Serial Output For Easy Prototyping And Smart Access Projects For Hobbyists And Makers Building Dope Easy Access Control And DIY Card Systems

125kHz RFID Read Module with EM4100 for Arduino
✔️ UART output for Arduino prototyping with EM4100 support (single unit)

This compact 125kHz RFID reader module reads EM4100 tags and outputs UART data, making it ideal for Arduino projects, DIY access control systems, and prototyping card-based workflows.

✅ Direct UART serial output for fast data communication
✅ External antenna compatibility up to 50 mm for layout flexibility
✅ EM4100 compatibility supports read-only and read/write tags

💡 What is a handy way to use a 125kHz RFID module in hobby projects? For practical access demos and quick integration:

- Read EM4100 tags with standard cards for demos

- Connect via UART to microcontrollers like Arduino

- Build simple access demos for doors or cabinets