Key Fob Receiver Overlay Shield for Particle

  • Adds Key Fob Receiver as an Overlay Shield
  • 1, 2, 3, 4, 5, 8-Button Remote Control Compatible
  • Pairing Button with Valid Receive LED
  • Up to 750 ft. Range with 8-Button Key Fob
  • 418/433 MHz Operation with Integrated LICAL Decoder
  • Designed for Particle Photon and Particle Electron


The PKFR is a Key Fob Receiver/Decoder shield compatible with Linx Technologies MS Series Key Fob Transmitters operating at 418/433MHz (1, 2, 3, 4, 5, 8-Button Transmitters Available Separately).

This device is capable of receiving button presses from a remote control up to 750 feet away (when using the 8-Button remote). When a remote control button is pressed, the on-board Valid LED illuminates. In addition, Particle Photon I/O lines are asserted High for the duration of the remote button press. Particle I/O lines return to a low state when the remote control button is released. Includes RP-SMA Antenna.

The On-Board LICAL Key Fob Decoder is Mapped to the following Photon/Electron Pins:
Key Fob Button 0 is Connected to Particle A0
Key Fob Button 1 is Connected to Particle A1
Key Fob Button 2 is Connected to Particle D2
Key Fob Button 3 is Connected to Particle D3
Key Fob Button 4 is Connected to Particle D4
Key Fob Button 5 is Connected to Particle D5
Key Fob Button 6 is Connected to Particle D6
Key Fob Button 7 is Connected to Particle D7

NOTE: Key Fob remotes are security encrypted, and must be paired with the controller prior to use. This is an Overlay Shield and does NOT directly plug into the Particle Photon or Particle Electron. This Overlay Shield requires a controller with Double-Row Headers on Each Side of the Particle module interface. To use an overlay shield, Particle Photon/Electron are plugged into a controller, which has two rows of pins on each side of the Particle module. This shield installs over the top of the Particle Electron/Photon, using the outer set of pins of the controller to make contact with the Particle module. Please examine photos carefully to see how overlay shields are installed.


This adapter plugs into any of our controllers manufactured for Particle Photon or Particle Electron.

Key Fob remote control transmitters can be found here.


IoT Motherboard Compatibility

This is an I²C Master Device, capable of directly connecting to any of our Cross-Platform I²C Slave Devices using the I²C Output. It is directly compatible with:

Particle Electron
Particle Photon (
Bluz Module (
ESP8266 Module

If using a Particle module, the PKFR Key Fob Receiver overlay shield may be used.

This device may be converted for direct use with:

Arduino Nano using the Arduino Nano Adapter
Arduino Micro using the Arduino Micro Adapter
Onion Omega 1&2 using the OC Adapter
Pycom WiPy using the WiPy Adapter
Adafruit Huzzah ESP8266 using the Adafruit Huzzah Adapter

This device may be converted to an I²C slave device using the Slave Adapter, ideal for use with Raspberry Pi, Beaglebone, Arduino Uno, and BridgeX5.

Arduino Interfaces:
Use the Slave Adapter and a Arduino Uno Interface Adapter
Use the Slave Adapter and a Arduino Nano I²C Shield
Use the Slave Adapter and plug into any Arduino Nano Master Device
Use the Slave Adapter and plug into any Arduino Micro Master Device

Raspberry Pi Interfaces:
Use the Slave Adapter and a Raspberry Pi I²C Interface Adapter
Use the Slave Adapter and a Raspberry Pi 2/3 I²C Interface Adapter
Use the Slave Adapter and a Raspberry Pi Zero I²C Interface Adapter

BeagleBone Interface:
Use the Slave Adapter and a BeagleBone I²C Interface Adapter

Windows 8/10 PC Interface:
Use the Slave Adapter and a Bridge Series Controller


Dimensions: 47.10000 x 25.60000 x 20.20000 mm
Mechanical drawing
Wiring diagram


Code Libraries

Official Libraries