RFID Lock Shield Kit

This product is currently sold out.
Tell me when it's back in stock


This product has been retired. It has been replaced by the

This shield allows your Arduino to control a door lock using an electric strike plate and one of a number of commonly-available RFID modules, and is based on the circuit described in the "RFID Access Control System" project in the book "Practical Arduino.

Note: Does not include the RFID reader module itself. You need to purchase that separately.

Supported reader modules include:

  • ID12
  • ID20
  • RDM630
  • RDM880
  • HF MultiTag


  • On-board 9V regulator to power Arduino from strike plate power supply.
  • Reset button wired through to Arduino reset pin.
  • Blue "Arduino power on" LED.
  • Green "External power supply on" LED.
  • Red "Strike plate activated" LED.
  • 100nF bypass/smoothing capacitors on 5V and 9V rails.
  • Overlay guide where you need it: both top and bottom.
  • Uses through-hole parts for easy assembly.


What's in the box?

  • Gold-plated Freetronics RFID Lock Shield PCB with overlay on both top and bottom.
  • All the required supporting parts.
  • The fully illustrated RFID Lock Shield Assembly Guide, which is also available online.