reTerminal DM Review: The Industrial HMI That Runs on Raspberry Pi CM4
There is a wide gap between a Raspberry Pi sitting in a project enclosure and a device ready for industrial deployment. The reTerminal DM from Seeed Studio is designed to close that gap entirely. It packages a Raspberry Pi Compute Module 4, a 10.1-inch IP65-rated touchscreen, industrial serial interfaces, PoE support, and a built-in camera into a single panel-mount device that ships ready to run Node-RED and Raspberry Pi OS.
At Think Robotics, it ranked eighth by revenue over the last 90 days, making it the highest-selling industrial HMI product on the store. This review covers the full specifications of the CM4108032 version with Camera and PoE, what it is designed for, real use cases, how it compares to alternatives, and what to know before buying.
CM4108032 + Camera + PoE: The version sold at Think Robotics is the advanced variant. The model number encodes the CM4 configuration: 8GB RAM and 32GB eMMC. Camera and PoE are add-ons not present in the base reTerminal DM, and their inclusion is what sets this variant apart for industrial camera and single-cable power deployments.
What Is the reTerminal DM?
The reTerminal DM is an all-in-one device that functions simultaneously as an HMI (Human-Machine Interface), a PLC gateway, a Panel PC, and an IIoT edge device. It sits at the edge layer of an industrial IoT architecture: connected downward to machines and sensors via serial and digital interfaces, and connected upward to IT infrastructure and cloud platforms via Ethernet and wireless.
The CM4108032 model number identifies the specific Compute Module 4 configuration: 8GB RAM and 32GB eMMC storage. The Camera and PoE version sold at Think Robotics is the advanced variant, adding a built-in Sony IMX219 camera module and a PoE module on top of the base hardware.
Key Specifications
| Specification | Detail |
|---|---|
| SoC | Raspberry Pi CM4 (BCM2711, quad-core Cortex-A72 at 1.5 GHz) |
| RAM | 8 GB LPDDR4 |
| Storage | 32 GB eMMC, M.2 NVMe SSD expansion slot (2280) |
| Display | 10.1-inch IPS, 1280 x 800, 400 nits, 170° viewing angle |
| Touch | 10-point capacitive, 7H pencil hardness |
| Camera | Sony IMX219, 3280 x 2464 stills, 1080p video |
| Front Panel | IP65 rated |
| Operating Temp | -10°C to 50°C |
| Power Input | DC 12V to 24V via terminal block |
| PoE | 802.3af/at, 44V to 57V input via LAN1 port |
| Serial Interfaces | RS485, RS232 (terminal block), CAN bus |
| Digital I/O | 4x DI, 4x DO (all optically isolated) |
| USB | 2x USB 2.0 Type-A |
| Networking | Gigabit Ethernet (x2), Wi-Fi 802.11ac, Bluetooth 5.0 |
| Wireless Expansion | Mini-PCIe slot (4G, LoRa modules, not included by default) |
| Audio | Dual MEMS microphones (waterproof membrane), speaker output |
| Sensors | Ambient light sensor (auto-brightness), buzzer |
| Mounting | Panel mount, DIN rail, VESA |
| OS | Raspberry Pi OS, SenseCraft Edge OS (Node-RED pre-installed) |
What Makes the Camera and PoE Version Different
The standard reTerminal DM is a powerful industrial panel computer on its own. The CM4108032 variant with Camera and PoE adds two capabilities that considerably expand its use cases in factory and infrastructure deployments.
The same sensor used in the Raspberry Pi Camera Module v2, integrated directly into the housing. No external cable routing, no enclosure cutout, no separate mounting bracket. For machine vision inspection at an HMI station, barcode reading, worker presence detection, or AI vision tasks, the camera is ready from day one without hardware modification.
Data and power through a single Ethernet cable from a PoE switch or injector. In industrial environments where running a separate DC power cable is inconvenient or costly, PoE significantly simplifies installation. The device can be repositioned or replaced without involving an electrician for the power connection.
Display and Interaction
The 10.1-inch IPS panel supports 1280 x 800 resolution, 400 nits of brightness, 16.7 million colors, and 170-degree viewing angles. The 400-nit figure is adequate for indoor industrial environments with controlled lighting. It is not rated for direct outdoor sunlight, where higher-brightness panels (1000 nits and above) are standard.
The capacitive multi-touch layer supports up to 10 simultaneous touch points and has a 7H pencil hardness rating, harder than most consumer tablet screens. The microphone openings are sealed with a waterproof acoustic membrane that maintains the IP65 front panel rating. The backlight is rated at 30,000 hours before reaching half brightness, corresponding to roughly 3.4 years of continuous use or more than 8 years at 10 hours per day.
The ambient light sensor automatically adjusts screen brightness based on the surrounding environment, reducing power draw in dim conditions and maintaining readability in bright ones.
Industrial Connectivity
This is where the reTerminal DM separates itself from consumer HMI devices. The interface set covers the protocols that are genuinely used in industrial environments.
Software: Node-RED, Raspberry Pi OS, and More
The reTerminal DM ships with Raspberry Pi OS and SenseCraft Edge OS, both with Node-RED pre-installed. Node-RED is a visual, browser-based programming tool that connects hardware inputs, software services, and APIs through a drag-and-drop flow editor. For industrial users who need dashboards, alerts, data logging, or connections to AWS IoT, Azure IoT Hub, or MQTT brokers, Node-RED enables all of this without writing application code.
This matters considerably for the target audience. Maintenance engineers and plant operators who are not software developers can configure monitoring dashboards and automation rules in Node-RED within hours. Full Python and C++ development is also supported through Raspberry Pi OS, using OpenCV, TensorFlow Lite, or any library from the Raspberry Pi ecosystem.
- Node-RED preinstalled for low-code dashboard and automation development
- Azure IoT Edge compatible for containerized workloads pushed from the cloud
- Home Assistant with Frigate and Coral AI USB TPU demonstrated on device for on-device surveillance inference
- N3uron, Ignition Edge, and InfluxDB have been deployed on the reTerminal DM for industrial data historian use cases
- Full Python development supported with OpenCV, TensorFlow Lite, and the standard Raspberry Pi software ecosystem
Real Use Cases
Seeed Studio has documented production deployments of the reTerminal DM across a range of industrial and infrastructure environments.
Pricing in India
The reTerminal DM CM4108032 with Camera and PoE is listed at Think Robotics at approximately Rs. 51,000 (compared from Rs. 56,999). This reflects the CM4 with 8GB RAM and 32GB eMMC, the full industrial enclosure, the Sony IMX219 camera, and the PoE module all included. The base reTerminal DM without camera or PoE starts at approximately $409 USD at Seeed Studio internationally. The Camera and PoE version is priced higher due to the additional hardware built in.
ThinkRobotics is the official Seeed Studio distributor in India. The complete range of Seeed products is stocked with local warranty support and fast delivery. For institutional, volume, or industrial project orders, contact the Think Robotics team directly for pricing support.
What Users Are Saying
The reTerminal DM has seen production deployments across industries including gas station safety, water management, healthcare, building automation, manufacturing HMI, and defect detection. Here is what the developer and deployment community is reporting from hands-on use:
Serial USB port permissions in Node-RED: A known setup step is configuring user group permissions for USB serial ports before the Node-RED serial node can detect them. The fix involves adding the pi user to the dialout group (sudo adduser pi dialout) and restarting the service. This is not highlighted in the quick-start guide but is well-documented in the Seeed Studio wiki and the Node-RED forum.
How It Compares
The original reTerminal CM4104032 is a compact 5-inch touchscreen device designed for IoT projects and prototyping. It lacks RS-485 terminal blocks, CAN bus, optically isolated DI/DO, IP65 rating, and PoE. The reTerminal DM is the industrial-grade, larger-screen product in the same family, purpose-built for factory and infrastructure deployment.
Weintek cMT panels are purpose-built industrial HMI devices with dedicated software (EasyBuilder Pro) and strong PLC vendor certifications. They run closed, vendor-locked software and cannot run Raspberry Pi applications. The reTerminal DM runs standard Linux, giving it far more flexibility for custom applications and cloud integration. The trade-off is that Weintek has more extensive out-of-the-box PLC driver libraries.
The Jetson Orin Nano Super paired with an external touchscreen delivers 67 TOPS of AI compute. For serious AI vision pipelines, multi-model inference, or transformer-based workloads, the Jetson is the right choice. For applications where the display is the primary interface and AI is lightweight (OpenCV, TFLite), the reTerminal DM is more practical and cost-effective as a single integrated unit.
Before You Buy
The Most Complete Industrial HMI Panel on the Raspberry Pi Platform
The reTerminal DM CM4108032 with Camera and PoE is the most complete industrial HMI panel available on the Raspberry Pi platform. It meets the full requirements of an edge IIoT device: IP65 protection, industrial serial interfaces with optical isolation, dual Ethernet ports, a 10-point touchscreen, a built-in camera, PoE power input, and the entire Raspberry Pi software ecosystem including Node-RED.
For engineers deploying monitoring systems, data loggers, or machine-vision inspection stations in factory or infrastructure environments, this device eliminates the need to source and integrate a display, a CM4 carrier board, a camera, serial adapters, and an industrial enclosure separately. Find it at Think Robotics with local warranty support and delivery across India.
Frequently Asked Questions
Get the reTerminal DM from India's Official Seeed Studio Distributor
CM4108032 with built-in Sony camera and PoE. IP65 industrial-grade front panel. Node-RED preinstalled. Local warranty and fast delivery across India.
Shop reTerminal DM at Think Robotics