Sona™ MT320 - WiFi 6 + Bluetooth® 5.4 Module

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Note: This product is under development. Sign up and download preliminary documentation in the Documentation section below. 

Introducing the latest of the Sona™ Wi-Fi 6 product line from Laird Connectivity, the MT320, the first industrial grade Wi-Fi/BT module based upon the technology leading MediaTek Filogic 320 (MT7921) Wi-Fi 6 chipset. A truly robust industrial IoT module: one that’s rugged, small, globally certified, has reliable connectivity, and is easy to integrate.

Our new Sona™ MT320 answers the call for next-gen wireless IoT. The Sona™ MT320 is purpose-built for easy integration with the MediaTek Genio™ family of processors and industrial IoT connectivity, supporting a SDIO host interface, industrial operating temp range, latest generation Wi-Fi and BT combined with both pluggable card and SMT M.2 packaging.

When matched with our industry leading services and support, the Sona MT320 is the only Wi-Fi module of its kind specifically designed to be paired with the Genio platform, addressing all your Wi-Fi 6 needs.

  • Compatible: Tested with the MediaTek Genio family of processors and latest MediaTek Genio SDK.

  • Reliable:  Integrated PA (Power Amplifier) and LNA (Low Noise Amplifier) with 2x2 MU-MIMO antenna for reliable connectivity in harsh RF environments.

  • Robust:  Rich feature-set including 802.11ax Wi-Fi 6 and Dual-Mode BT v5.4. Reliable industrial temperature range, and solder-down module is suitable for industrial rugged applications.

  • Secure:  Supports the latest WPA2/3 Personal and Enterprise security standards.

Premium WiFi Advantage

The road to bringing wireless to your product is perilous and long – but it doesn’t have to be. These are the pillars of our value as a partner and provider: Excellence in development across hardware and software, delivered with industry-best support and deployed around the world in the markets that drive your business success.

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Wireless Specification
2x2 Wi-Fi 6 and 1x1 Bluetooth 5.4
2.4 and 5 GHz
Chipset (Wireless)
MediaTek Filogic 320 (MT7921)
Antenna Options
RF Antenna Pin / On-board MHF4 Connector
FCC/IC/CE/UKCA (Pending)
Data Rate
UP to 720 Mbps @ 2.4 GHz
Up to 1.2 Gbps @ 5 GHz
Form Factor
M.2 1420 SMT
M.2 2230 Key E Pluggable
Interfaces - General
SDIO 3.0 (Wi-Fi and HCI BT)
PCM (BT Audio)
Operating Temp (Max) (°C)
+85 °C
Operating Temp (Min) (°C)
-40 °C
Part NumberAntenna TypeChipset (Wireless)Form FactorFrequencyPackagingProduct TypeSoftwareSystem ArchitectureTechnology
Sona MT921 - with MHF4 Connector
MHF4 MediaTek Filogic 320 M.2 1420 2.4 / 5 GHz Tape and Reel Embedded Module Linux / Android Hosted Wi-Fi 6, Bluetooth 5.4
Sona MT921 - with MHF4 Connector
MHF4 MediaTek Filogic 320 M.2 1420 2.4 / 5 GHz Cut Tape Embedded Module Linux / Android Hosted Wi-Fi 6, Bluetooth 5.4
Sona MT921 - RF Trace
RF Trace MediaTek Filogic 320 M.2 1420 2.4 / 5 GHz Tape and Reel Embedded Module Linux / Android Hosted Wi-Fi 6, Bluetooth 5.4
Sona MT921 - RF Trace
RF Trace MediaTek Filogic 320 M.2 1420 2.5 / 5 GHz Cut Tape Embedded Module Linux / Android Hosted Wi-Fi 6, Bluetooth 5.4
Sona MT921 - M.2 2230 Module
MHF4 MediaTek Filogic 320 M.2 2230 2.4 / 5 GHz Tray Embedded Module Linux / Android Hosted Wi-Fi 6, Bluetooth 5.4


Name Part Type Last Updated
Integration Guide - Sona MT320 Series (Preliminary) All Documentation 07/14/2023
Product Brief - Sona MT320 Series (Preliminary) All Product Brief 02/28/2024


What is the new longer guard interval in Wi-Fi 6?

One of the new features in Wi-Fi 6 is a longer guard interval. The guard interval is used to help mitigate multipath or overlapping transmissions. This is done by adding a delay between symbols (set of 0s and 1s). The shorter the guard interval theoretically the faster the throughput but you are more susceptible to multipath due to metal and other reflective surfaces.

Wi-Fi 4 and 5 supported two guard intervals:

  • Short - 0.4 microseconds
  • Long - 0.8 microseconds

Wi-Fi 6 supports 3 guard intervals:

  • Normal - 0.8 microseconds
  • Double - 1.6 microseconds
  • Quadruple - 3.2 microseconds

In Wi-Fi 6 the 1024-QAM allows up to a 4x longer symbol duration than in Wi-Fi 5, so the efficiency is still similar to Wi-Fi 5 even with Quadruple guard interval.

What guard interval should I use for various use cases?

A general rule of thumb should be:

  • Normal - Use this in a clean open area without a lot of metal. This would also best be used outdoors. Normal Guard Interval is the best choice when throughput is of the utmost importance.
  • Double - This is a good compromise between Normal and Quadruple. It will not provide as good of throughput as Normal but will reduce the likelihood of multipath in areas that are smaller or have some metal.
  • Quadruple - This would be used in small areas or areas with a lot of metal. This would also be the best choice in areas with a lot of clients to reduce the overhead of retrying packets.

Are all of the Wi-Fi 6 features available in the 2.4 GHz band?

All of the Wi-Fi 6 features are supported in the 2.4 GHz band in a Wi-Fi 6 radio.

This was not the case in Wi-Fi 5. It reverted back to Wi-Fi 4 in the 2.4 GHz channels.

Do Laird Wifi modules work with OpenWRT?

Yes, Laird Wifi modules can be integrated with OpenWRT like with almost any other Linux operating system.

See Lairds "Guide" Section for an example on how to integrate the Sterling-LWB5+ Wifi/Bluetooth module with OpenWRT on a Raspberry Pi.

What is Laird Connectivity's product lifecycle EOL and PCN policy?

Laird Connectivity is committed to the long-term supply of all its standard embedded wireless modules and packaged products. Laird Connectivity’s products are specifically designed to meet the needs of the industrial and medical markets, which typically require 7 – 10 years product lifecycle. Although Laird Connectivity can’t guarantee that a component used in our products will not be obsoleted and cannot be reasonably substituted, Laird Connectivity can assure customers we will continue to sell our product when we have customer demand and can obtain the necessary components to build our products.

View our full policy here. 

Become a Laird Connectivity Customer and Gain Exclusive Access to Our Design Services Team

  • Antenna Scans
  • Antenna selection and placement
  • Custom antenna design
  • Worldwide EMC testing / certifications
  • Embedded RF hardware / firmware design
  • Cloud architecture and integration
  • Mobile application development
  • Product & Industrial Design

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