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Arduino MKR FOX 1200

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Code: MKRFOX1200WANT   /   Barcode: ABX00014

Add Sigfox connectivity to IoT solutions with low power consumption needs.


The Arduino MKR FOX 1200 board provides a practical and cost effective solution to adding Sigfox connectivity to projects requiring low power. This open source board can be connected to Arduino Create for programming, and to the existing Sigfox infrastructure with it’s broad Europe-wide coverage for collecting data. Sigfox infrastructure runs 24/7 without you needing to do anything to maintain it, and you can always check its status here.

The MKR FOX 1200, gives you a great out-of-the-box experience when building IoT projects of any size: from the single sensor monitoring temperature in your home, to an industrial deployment covering the whole of an outdoors factory. The board's main processor is a low power Arm® Cortex®-M0 32-bit SAMD21, like in the other boards within the Arduino MKR family. The Sigfox connectivity is performed with a module from Microchip®, the Smart RF ATA8520, a low power chipset operating in the 868 MHz range. No extra crypto chip is needed in this case, since the Sigfox network offers its own end-to-end security.

These features make it a great IoT node and building block for low power wide area IoT devices within the Sigfox infrastructure.

Sigfox Connectivity

At Arduino we have made partnered with Sigfox to offer you straightforward way to connect devices to the Cloud with zero investment in infrastructure. Every MKR FOX 1200 comes with a free one-year subscription to Sigfox' data plan, useful for testing the Sigfox network. Please check the plan’s conditions in terms of messages per day at the Sigfox website.

When it comes to coverage, Sigfox covers a large percentage of the European soil. Check this page at Sigfox website to see whether your planned area of application is covered.

Sigfox Starter Program

To ensure a better experience for you, our MKR FOX 1200 user eager to start a new project, Sigfox offers a special program called the Sigfox Starter Program. Among others it will give you:

  • Access to Sigfox technical platforms (backend, build, etc.)
  • Access to Sigfox APIs to start playing with real Sigfox data.
  • Access to specialized Sigfox technical content support, the so-called learning center.

Once you have got your board, apply to the program here.

Battery Power

Its USB port can be used to supply power (5V) to the board. It has a screw connector where to attach a 3V battery pack. The board consumes so little that it runs on two 1,5V batteries type AA or AAA for a really long time.

Related Boards

If you are still deciding about the right wireless protocol for your solution, Arduino's MKR family has some alternatives to offer:

  • MKR WAN 1310: if you want to experiment with either LoRa® or LoRaWAN™. Read more here. We have also a LoRa® gateway if you are thiking of building your own infrastructure.
  • MKR GSM 1400: when looking at global coverage, GSM / 3G is the world's most extended network. Visit its product page here. We also provide you with a bundle including the board and a SIM with a global data plan in case you need it.
  • MKR NB 1500: if your solution is designed around Narrowband IoT. Read more about it here.

Getting Started

The Getting Started section contains all the information you need to configure your board, use the Arduino Software (IDE), and start tinkering with coding and electronics. If you want to know more about Arduino’s Sigfox API, check this reference page.

Need Help?

Check the Arduino Forum for questions about the Arduino Language, or how to make your own Projects with Arduino. Need any help with your board please get in touch with the official Arduino User Support as explained in our Contact Us page.


You can find here your board warranty information.

Tech specs

The Arduino MKR FOX 1200 is based on the SAMD21 microcontroller.

Microcontroller SAMD21 Cortex®-M0+ 32bit low power ARM MCU (datasheet)
Radio module Microchip® Smart RF ATA8520 (datasheet)
Board Power Supply (USB/VIN) 5V
Supported Batteries 2x AA or AAA
Circuit Operating Voltage 3.3V
Digital I/O Pins 8
PWM Pins 13 (0 .. 8, 10, 12, 18 / A3, 19 / A4)
I2C 1
Analog Input Pins 7 (ADC 8/10/12 bit)
Analog Output Pins 1 (DAC 10 bit)
External Interrupts 8 (0, 1, 4, 5, 6, 7, 8, 16 / A1, 17 / A2)
DC Current per I/O Pin 7 mA
CPU Flash Memory 256 KB (internal)
Clock Speed 32.768 kHz (RTC), 48 MHz
Full-Speed USB Device and embedded Host  
Antenna gain 2dB (bundled antenna at the Arduino Store)
Carrier frequency 868 MHz
Working region EU
Length 67.64 mm
Width 25 mm
Weight 32 gr.


OSH: Schematics

The MKR FOX 1200 is open-source hardware! You can build your own board using the following files:


Pinout Diagram

Download the full pinout diagram as PDF here.

Interactive Board Viewer


Get Inspired



When purchased at the Arduino Store, the MKR FOX 1200 comes bundled with an antenna that can be attached to the board using the existing micro UFL connector. It is possible to use other antennas using the appropriate pigtail.

When purchasing a different antenna than the one provided (or when making your own), please check that it is tuned for the frequency band in use in the Sigfox range (868 MHz). Also avoid placing your antenna in parallel to a ground plane like a large metallic surface.

Batteries, Pins and board LEDs

  • Battery capacity: Connected batteries must have a nominal voltage of 1.5V.
  • Battery connector: The board comes with a screw terminal for a pair of either AA or AAA batteries where to plug a 3V battery pack (not included). Make sure you respect the polarity of the connector as labelled on the board.
  • Vin: This pin can be used to power the board with a regulated 5V source. If the power is fed through this pin, the USB power source is disconnected. This is the only way you can supply 5v (range is 5V to maximum 6V) to the board not using USB. This pin is an INPUT.
  • 5V: This pin outputs 5V from the board when powered from the USB connector or from the VIN pin of the board. It is unregulated and the voltage is taken directly from the inputs. When powered from a 3V battery pack it supplies around 3V. As an OUTPUT, it should not be used as an input pin to power the board.
  • VCC: This pin outputs 3.3V through the on-board voltage regulator. This voltage is 3.3V if USB or VIN is used and equal to the series of the two batteries when they are used.
  • LED ON: This LED is connected to the 5V input from either USB or VIN. It is not connected to the battery power, thus minimizing the impact on battery usage. It is therefore normal to have the board properly running on battery power without the LED ON being lit.
  • Onboard LED: On MKR FOX 1200 the onboard LED is connected to D6.