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MT3620 Mini Dev Board

Out of stock
  • 10+: $34.70


Important Notice

1. Return Policy

This product can only be activated once. Seeed will not accept return once the package has been opened. Check Warranty & Returns here. If there are any quality issues after opening the package, please contact Seeed Tech Support Team [email protected]

2. Open Source Licenses 

The software included in this product contains copyrighted software that is licensed under the GPL, LGPL or other open source licenses, listed You may obtain the source code for applicable software from or by sending an email to [email protected].

3. Not Available in China Mainland

Currently, the product is not available in China mainland.


MT3620 Mini Dev Board is a lite version of Seeed previous Azure Sphere MT3620 Development Kit. For an introduction to Azure sphere, please refer to this link Azure Sphere 


We developed this board to meet the needs of developers who need smaller sizes, are more scalable, and have lower costs. This development board is based on the MT3620 module, which greatly simplifies the difficulty of hardware design. The MT3620 module is developed by our partner AI-Link. Developers can easily reuse this design into their own projects. The development board uses two single-row pin headers for easy plug-in on other motherboards or expansion boards. Unlike the full-featured Azure Sphere MT3620 Development Kit, this development board optimizes the design by reducing some system hardware peripheral resources, and only provides the necessary hardware resources to developers. In terms of hardware specifications, we only support 2.4G Wi-Fi and reduce I2S and some GPIO ports.  

What’s new of the MT3620 Mini Dev Board?

  • Based on MT3620 module (WF-M620-RSA1)
  • Reduce the board size from 50mm*80mm*16mm to 34mm*60mm*19mm
  • Keep the necessary LED indicator and buttons
  • The board form factor is more easier for add-on usage

The figure shows the full-feature dev board and new mini dev board size comparison: 

The Azure Sphere operating system is pre-installed on the MT3620 and is designed to work with the Azure Sphere Security Service to create a secured IoT platform. Together the Azure Sphere OS and security service deliver: 

  • certificate-based device authentication to any web service
  • software attestation and secure boot
  • threat detection via failure reporting
  • ongoing security updates
  • an integrated, secured end-to-end IoT solution

MT3620 software development is supported using the powerful Microsoft Visual Studio IDE: Install Visual Studio and the Azure Sphere extension, plug the development board into a PC over USB, and start developing IoT applications with unprecedented levels of security.

Key Features

  • Azure Sphere: End-to-end security for IoT devices.
  • Wi-Fi 802.11 b/g/n.
  • Tri-core microcontroller with on-chip RAM & flash.
  • Microsoft Visual Studio development environment.
  • Online authentication & updates for device lifetime.
  • Expand UART, I2C, SPI, ADC, GPIO resource on pin header.


To use 12S, please refer to M4 User Manual

Technical details

Dimensions 34mm x60mm x19mm
Weight G.W 21g
Battery Exclude

Part List

MT3620 Mini Dev Board 1
Micro USB Cable 1


HSCODE 8517180050
USHSCODE 8543708800
EUHSCODE 8543709099
RoHS 1



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