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The Next-Generation AutoPi Telematics Unit CM4

The new innovative and robust AutoPi TMU CM4 is the future of fleet telematics. It allows users for more possibilities and comes with a wealth of benefits.

Available for order now. Ships within 2-3 days. Telematics Unit Telematics Unit
Size perspective of the AutoPi device
New and improved

Harness the power of a Raspberry Pi Compute Module 4

The AutoPi TMU CM4 has new improved in several areas, such as better heat dissipation, new I/O button, sturdier design and casing. Furthermore, the Compute Module 4 boosts the raw potential of your solutions, and has new and improved connecters.

Faster CPU and more RAM

Extensive security integrated circuit(IC)

Capable of upgrading to 8GB RAM

The next-generation TMU

Unique features
available in the CM4

Our hardware is built to be a one-box-solution, centralizing data from assets installed in the vehicle, providing freedom to customize their solution as they see need.

Ethernet- and Dual USB ports
Button input for interaction with device
EU/US designed parts only, with production in EU
Upgraded Smart Power Manager to allow better perseveration of auxiliary battery
Ethernet- and Dual USB ports
Button input for interaction with device
EU/US designed parts only, with production in EU
Upgraded Smart Power Manager to allow better perseveration of auxiliary battery
The AutoPi CM4 device
Bluetooth upgraded to 5.0
Upgradable eMMC hard drive for fail safe IoT-solutions
40-pin header available for in-case extentions
Twice as fast boot-up and shut down time
Bluetooth upgraded to 5.0
Upgradable eMMC hard drive for fail safe IoT-solutions
40-pin header available for in-case extentions
Twice as fast boot- and shut down time
Size of the AutoPi Device
Key Features

Outstanding core features of CM4

Our solutions, both hardware and software, always focus on scalability and there are no projects too small or big for us to handle.

Upgraded automotive interface

The device comes with a 2x CAN interface and can be further expanded with additional CAN interfaces. Support for Diagnostics over IP (DoIP).


AutoPi Core is based on a full LINUX OS (Raspberry Pi OS), with endless possibilities for extensions and integrations. Well proven and tested OS, with high endurance.

Open source-software

The device runs on an open source-software, allowing users to build custom code on top of that. All drivers and implementations in AutoPi Core is availble from our GitHub repository.

Computing power

Broadcom BCM2711 Quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz provides incredible speed and functionality. 1GB LPDDR4 RAM and an integrated GPU. Upgradable to even more memory.

Image of AutoPi CM4 Order

4G/LTE Global Coverage

Integrated modem supporting global 4G/LTE bands,
enabling worldwide coverage in one single device.

Built in 2x CAN interface

8x increased automotive bandwidth and speed with dual CAN,
in comparison with the classic CAN.

OEM integrated unit or aftermarket add-on

Utilize the AutoPi TMU CM4 as a factory integrated OEM device,
or as an aftermarket add-on installation.

Integrated power-safe functionality

Fully proven and experienced power fail-safe functionality,
protecting against loss of critial data and increasing business productivity.

Extendable to almost any usage

Allow extension to countless, business and personal, use cases.
Additionally, add external sensors to further boost the capabilities.

Upgradable CPU/RAM

Upgrade the device to a faster processor,
get up to 8GB RAM and 32GB of storage.

Automotive certified (CE/FCC)

We are entirely CE & FCC certified for automotive standards.

Integrated security element

Secure and encrypt your data. Keep the data and applications
safe from other applications running on the same device.

AutoPi CM4 device in car 1
AutoPi CM4 device in car 2
AutoPi CM4 device in car 3
AutoPi CM4 device in car 4
Easier access to all features

Upgraded expansion

We’ve combined all the previous shields into one entirely original shield.
The ability to extend the AutoPi TMU with various components of sensing technology, can increase the effectivity of your business.

The rear includes:

• Dual USB & Ethernet

The side includes:

• Simcard, Micro-USB, Mini-HDMI slot

Upgradable to match your requirements

More processing power, more memory

Processor: Broadcom BCM2711 quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
Memory: 1GB, 2GB, 4GB or 8GB LPDDR4 (depending on variant)
Merged into the CM4

Innovative hardware components

Base your solution on top of one of the strongest commercial minicomputers available.
— “We do not believe in one-size-fits-all on any level, but in the ability to adapt and accommodate”.

Raspberry Pi™

An embedded Raspberry Pi delivers the computing power which enables the AutoPi Telematics Unit to do practically anything.

I/O Button input

The I/O button is a programmable, handheld input/output that allows automating actions by pushing a button on the AutoPi TMU CM4.

Security Element

Considerably cut the cost and complexity of managing the secure storage without significantly compromising security of the AutoPi TMU device.


The AutoPi is extensible through Bluetooth 5.0 with Bluetooth Low Energy (BLE). Connect a range of third-party products through this.


Embedded 3-axis accelerometer enables real-time measurement of all 3D horizontal and vertical G-forces applied to the car.

GPS Module & Native Real-time Clock

Real-time tracking of vehicle position, speed, and altitude, that incoporate A-GPS support. Additionally, a native Real-time clock has been added on the device.

USB Ports

Connect USB peripherals to the external USB ports. E.g., WiFi and Bluetooth devices, or an HD dashcam. Upgraded to the CM4 specs, made up of two ports and can be increased with a hub.

4G/3G Modem & WiFi

Future-proof design allows easy replacement of the network module with other expansion boards supporting standard Mini PCI-Express socket. Additional connection options are available through built-in 2.4GHz and 5GHz IEEE 802.11.b/g/n/ac wireless LAN.


The AutoPi TMU CM4 comes with an integrated 40 pin header (1.27mm pitch). It is possible to use the header to design HAT (Hardware Attached on Top) boards that greatly extends the functionality of the device.

OBD Chipset

Advanced on-board OBD-II chip that supports communication with all OBD-II compliant vehicles.


Plug in a touchscreen or any other display device through the supplied HDMI port. An essential feature when building an in-car computer or entertainment system.

Voice Speaker

Playback of voice notifications based on real-time data from GPS, accelerometer, car diagnostics or any other device attached.

Something unclear?

Frequently asked questions

The AutoPi TMU CM4 is a smart telematics device built on the Raspberry Pi Compute Module 4 and the AutoPi board. Here are its main features:

  • Processor: Powered by a Broadcom BCM2711 Quad-core Cortex-A72 @ 1.5GHz for fast performance.

  • Momory: Starts with 1GB LPDDR4, but you can upgrade to 2GB, 4GB, or 8GB.

  • Storage: Comes with 8GB eMMC storage, upgradeable to 16GB or 32GB.

  • Modem: Has a 4G/LTE Cat 4 connection with global support.

  • GPS: Built-in GPS + A-GPS, compatible with GPS/GLONASS/BeiDou/Galileo/QZSS.

  • Power: Works with 12.5V car batteries and up to 35V for trucks, with a system to prevent battery drain.

  • Wireless: Includes WiFi (2.4GHz/5GHz) and Bluetooth 5.0 + BLE.

  • Security: Features hardware-based secure key management.

For all the technical details, check out the tmu cm4 datasheet. Want to know more about the device? Take a look at our autopi device guide.

The AutoPi TMU CM4 is perfect for fleet managers, car rental companies, logistics firms, and tech enthusiasts who want to improve vehicle monitoring and management. If you want to see specific industry applications, check out our industry pages.

Installation is quite straightforward. It connects to your vehicle's OBD-II port, and detailed instructions are included. No special tools are required, but if you're unsure, a professional can easily guide you through the installation with you. We have an installation guide that you might find useful.

The AutoPi TMU CM4 works with most vehicles made after 1996 that have an OBD-II port. To check specific compatibility, refer to your vehicle's manual or consult our support team. The AutoPi TMU CM4 is prebuilt to be CAN Bus and J1939 ready.

The AutoPi TMU CM4 is packed with features like advanced vehicle telematics, real-time GPS tracking, remote diagnostics, and customizable alerts. It supports over-the-air updates and integrates smoothly with various software platforms.

You can find more about its features on our solution page.

You can purchase the AutoPi TMU CM4 through our webshop for quick and easy online ordering. If you prefer, you can also buy it via invoice through one of our sales representatives. Just get in touch with our sales team for assistance.

The AutoPi TMU CM4 stands out for its robust telematics capabilities, ease of use, and reliable performance. It offers more features and flexibility than many other devices on the market.

The device uses advanced encryption and secure connections to protect your data. We prioritize your privacy and ensure that your information is safe.

Yes, it includes access to a powerful software platform that offers real-time data visualization, reporting, and remote control features. Regular updates are provided to enhance functionality.

We offer a 14-day return policy. If you're not satisfied, return the product within 14 days for a full refund. Terms and conditions apply.


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