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reTerminal CM4104032 - AI, IoT, IIoT Human Machine Interface, All-in-one Board, Modular Design, RPi CM4 32GB powered, IPS multi-touch screen, 2.4GHz/5GHz Wi-Fi & Bluetooth 5.0, rich interfaces


The reTerminal is a Human-Machine Interface facility, designed in modularization, offered multiple interfaces and components. It is your hand-size, powerful, Raspberry Pi-based all-in-one board, assisting you to develop individual IoT & AI projects and being ready to materialize industrial-level monitor and control functions.

In stock
  • 10+: $199.00


The reTerminal is a Human-Machine Interface facility, designed in modularization, offered multiple interfaces and components. It is your hand-size, powerful, Raspberry Pi-based all-in-one board, assisting you to develop individual IoT & AI projects and being ready to materialize industrial-level monitor and control functions.


  • Raspberry Pi All in One Board: Powered by RPi CM4 32GB, integrated with IPS multi-touch screen, dual-band Wi-Fi & Bluetooth, pre-installed compatible Linux system
  • Modular Design: Featuring industrial high-speed expansion interface and 40-Pin Raspberry Pi compatible header
  • Rich Interfaces & Components: Equipped USB Type-A ports, Gigabit Ethernet, micro-HDMI, micro-SD card slot, MIPI camera interface, light sensor, accelerometer, buzzer, RTC and programmable buttons
  • Neat Personal Assistance: Enjoy yourself in multiple interested Dashboard or AI projects by Seeed and communities while utilizing built-in sensors and components
  • Great Industrial Facility: Benefit from stable Raspberry Pi-based operating system, multiple expanded industrial-level connectors, cryptographic co-processor, and official Seeed expansion board reTerminal E10-1


The reTerminal is a Raspberry Pi all-in-one board, powered by Raspberry Pi Compute Module 4(CM4) module, integrated with one IPS panel type multi-touch screen, carried with dual-band 2.4GHz/5GHz Wi-Fi & Bluetooth 5.0, pre-installed Raspberry Pi-based Linux system, provided storage 4 GB RAM and 32 GB eMMC. By designing in modularization, the board is equipped with multiple accessible components and high-speed connectors. It can be neatly inputted home assistance and individual AI development applications, also performing industrial-level functions suitable for being an industrial facility.


Design in Modularization

Being an IoT hardware partner since 2008, Seeed improves its ability of hardware integration and designs the reTerminal to be modular. Hence, the reTerminal includes one industrial high-speed expansion PCIe interface on the back, along with a Raspberry Pi compatible 40-Pin GPIO connector beside, extremely expanding its application fields. Since the official expansion board reTerminal E10-1 has been published, reTerminal now is carriable and can be utilised in more advanced scenarios.

Rich Interfaces & Components

This all-in-one board still comes with 2 USB 2.0 Type-A ports, one MIPI camera interface, 4 programmable buttons, one RJ45 Gigabit Ethernet connector, one micro-SD card slot and an additional micro-HDMI interface which supports 4K resolution with a frame rate of 60 fps. These can be programmed for your further usage.

Meanwhile, there are several components mounted on the board, including a light & proximity sensor, LIS3DHTR accelerometer, buzzer, and Real-Time Clock(RTC). The power indicator light as well as other system user lights on the board can be used by your definition.

Wild Application Areas

The reTerminal can be your personal useful development board since it is built around Raspberry Pi CM4 module, and it provides multiple function thanks to its unique modular design and rich interfaces. You will find it more interesting when you discover there are plenty of skillful IoT & AI projects published by Seeed and the community.

And yet what about Industrial Internet of Things(IIoT) applications? It can be even amazed that reTerminal has equipped a cryptographic co-processor. That is to say, the reTerminal assembles a stable Linux operating system, high-speed expansion connector, multiple types of universal I/O, and hardware security, all of which make it hardware-ready for industrial equipment monitor and control.

Seeed Agile Customization Service

With decades of ODM & OEM experience and an in-depth understanding of popular open-source hardware platforms, including Raspberry Pi, we promise you the professional and flexible customization service for the reTerminal.

Discover our Agile Customization Service for Open-source Hardware Platforms

Discuss your reTerminal Design Idea with Us Now


Practical Tools Utilization

We here publish some widely useful tools that can be used in reTerminal, for your convenience.

Home Assistant

Home Assistant allows you to get on top of your energy use with its home energy management feature. It keeps your data local, managed all your devices automatically, controlled by Companion Mobile Apps.

Check our Home Assistance wiki application here.

Remote Management for reTerminal

Want remotely control the reTerminal?

Follow our wiki to setup Mender Client on a reTerminal to access OTA updates from a Hosted or Self-Hosted Mender Server.

Mount Options for reTerminal

Seeed provides a wiki containing several mount options for reTerminal form the community.


Specification Details
Platform Processor Broadcom BCM2711 quad-core Cortex-A72 (ARM v8)
Frequency 64-bit SoC @ 1.5GHz
Memory Capacity 4GB
Technology LPDDR4 with on-die ECC
eMMC Capacity 32GB
Wireless Wi-Fi 2.4GHz and 5.0GHz IEEE 802.11b/g/n/ac
Bluetooth Bluetooth 5.0, BLE
Display LCD 5-inch 720x1280 LCD
Touch Panel Capacitive touch panel (support multi-touch)
Video HDMI 1 x Micro HDMI output (up to 4Kp60 supported)
CSI 1 x 2-lane MIPI CSI camera interface
Multimedia H.265 (4Kp60 decode)
H.264 (1080p60 decode,1080p30 encode)
OpenGL ES 3.0 graphics
Built-In Modules Real-Time Clock NXP Semiconductors PCF8563T
Low backup current; typical 0.25μA at VDD = 3.0 V and Temperature = 25 ℃
Accelerometer STMicroelectronics LIS3DHTR
16-bit, ±2g/±4g/±8g/±16g dynamically selectable full scale
Encryption Microchip ATECC608A
Secure Hardware-Based Key Storage, Asymmetric Sign, Verify, Key Agreement
Light Sensor Levelek LTR-303ALS-01
Digital light sensor
Internal IO
Microchip MCP23008-E
Buzzer ≥85dB @10cm 2700±300Hz
External I/O GPIOs Up to 5 × UART
Up to 5 × I2C
Up to 5 × SPI
1 × SDIO interface
1 × DPI (Parallel RGB Display)
1 × PCM
1 × PWM channel
Up to 3× GPCLK outputs
Vertical expansion
1 × PCIe 1-lane Host, Gen 2 (5Gbps)
1 × USB 2.0 port (highspeed)
26 x GPIOs
Power Voltage 5V DC
Current 3A(Minimum)
Temperature Operating Temperature 0 - 70°C( For the LCD Screen: 0 - 60°C)
Mechanical Dimensions 140mm x 95mm x 21mm
Weight 285g


Certificates CE, FCC, TELEC(211-210815)

Hardware Overview

If you want to check the GPIO pin you can refer to the GPIO Pin Schematic Diagram.


Before you attach a camera with the CSI 22 Pin cable to the board, please double-check the FFC contact pins are facing up.

Part List

reTerminal CM4 x1
Screw Driver x1


How can I remove the case and disassemble the reTerminal?

You can refer to this video or getting started wiki to disassemble the trTerminal.

Can I install other systems, like Ubuntu? How can I do it?

Yes, the reTerminal is supporting Ubuntu and you can check here to see how to install it.

How can I boot an OS from USB Flash Drive?

You can see the wiki here to boot an OS from USB Flash Drive.

I have more questions about the reTerminal?

Seeed has a wiki assembled all the questions that users care about the most, you can click here to see it.


HSCODE 8471419000
USHSCODE 8471410150
EUHSCODE 8471707000
CE 1
EU DoC 1
RoHS 1
UK DoC 1



Write Your Own Review
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  1. Product Quality
    from order view
    I received my reTerminal in a very reasonable amount of time considering how scarce Raspberry Pi devices are right now. Packaging was great, the device looks as good in person as I hoped it would.

    I was able to quickly power it up and play with the onboard sensors using the included program. The screen is fabulous and the touchscreen is a welcome upgrade from cheap resistive touchscreens. I was able to operate the OS with my finger easily.

    The documentation was adequate, I had to dig around a bit to find what I wanted but did find it.

    I wish it had come with Bullseye installed. Node-RED would not install on it without forcing it to revert to older components. So I flashed the OS to Bullseye.

    Upgrading the OS was a bit of a challenge, starting with getting the reTerminal open to access the boot switch. Not trivial to pop that back off. Following the instructions I found I was able to get the OS updated and things went pretty smoothly overall. Not as easy as upgrading a normal Pi, but I did get the job done and Node-RED installed just fine.

    Overall I love this product. Self contained Pi with a great screen!
  2. Product Quality
    from order view
    This user did not leave any comments.
  3. Product Quality
    from order view
    Very solid build
  4. Product Quality
    from order view
    It is a product that meets future product development requirements.
  5. Product Quality
    from order view
    Good documentation and quality, hardware is very well built and well presented


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