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Active heading stabilization icon

The MTi-3 inertial measurement unit is a self-contained attitude and heading reference system (AHRS) that delivers true-north-referenced yaw, or heading.


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Smallest industrial grade form factor

As part of the MTi 1-series, it is among the smallest of its kind available, with each module measuring only 12.1 × 12.1 mm and weighing <1 g.


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Comprehensive, all-in-one solution

Suitable for a wide range of (embedded) applications, the MTi-3 is part of the MTi-1 series. It's a comprehensive, all-in-one solution that eliminates the need for you to design your own system and incorporate separate gyroscopes, accelerometers and other sensors.


Sensor fusion performance
Roll, pitch 0.5 deg RMS
Yaw/heading 2 deg RMS
Strapdown integration (SDI): Yes
Sensing components
Standard full range 2000 deg/s
In-run bias stability 6 deg/h
Noise density 0.003 °/s/√Hz
Standard full range 16 g
In-run bias stability 40 µg
Noise density 70 µg/√Hz
Magnetometer Onboard
System specifications
IP-rating (equivalent): IP00
Dimensions 12.1 × 12.1 × 2.55 mm 
Weight 0.6 g
Input voltage 2.8 to 3.6 V
Power consumption (typ.) <100 mW @ 3 V
Interfaces / IO
Interfaces UART, SPI, I²C
Protocols Xbus
Output frequency Up to 1 kHz


Complete and detailed specifications are available at 

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Free to download MT Software Suite

The MT Software Suite gives you easy access to the MTi-3 and contains a specially developed, easy-to-use graphical user interface, as well as drivers for various operating systems. It also offers many other useful tools, for example source code and documentation.


The suite comes with complete documentation. Of course, you can also always contact our technical support staff if you have questions.

The MT Software Suite includes different software programs, such as: 

Icon representing MT Manager (GUI) MT Manager (GUI)

This provides you with easy access to all the functions of your MTi from the comfort of your office. MT Manager enables recording and playback of data, real-time data viewing, including graphs, and easy configuration of settings.

Icon representing code language MT SDK

This program is for self-developing your software to communicate with our sensor, including programming examples for C, C++, C#, MATLAB, Python, ROS, and Nucleo/STM boards.

Icon representing a Magnetic Field Mapper Magnetic Field Mapper

Magnetic Field Mapper (MFM) is a calibration tool for conducting magnetic calibration, available as GUI for Windows and as SDK.


Xsens MTi 1-series provides
precise attitude report for
blueprint subsea beacons


The Xsens MTi-3 module is used within the SeaTrac beacons to provide highly accurate and stable attitude reference. The Xsens module not only measures magnetic heading but combines both pitch and roll angles to provide the user with a very precise attitude report of their subsea asset. 

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Ready to buy?

Choose the option that works best for you

development-kit-icon Buy a development kit

If want to work with the MTi-3 for the first time, we recommend getting started with the MTi-3 DK.

Icon of a shopping cart Purchase at a local channel partner

You can purchase an MTi-3 via any of our resellers in or near your country or through an online catalogue.


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For any final questions or comparisons, feel free to contact our product support team. 


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