MPC-3121 Series
12.1-inch fanless industrial panel PCs with EN 50155 certifications
Features and Benefits
- 12-inch panel PCs
- Intel Atom® x6425E quad-core processor
- 500-nit or 1000-nit sunlight-readable LCD
- Glove-friendly, multi-touch screen
- -40 to 70°C wide-temperature design, no fan or heater
- 24 to 110 VDC wide range isolated power input
- Complies with all EN 50155 mandatory test items
Certifications
- UL Listed
- En50155
- CE
- FCC
Introduction
The MPC-3121 12-inch panel PCs with Intel Atom® x6425E quad-core processor deliver a reliable, durable, and versatile platform for use in industrial environments. All interfaces come with IP66-rated M12 connectors to provide anti-vibration and waterproof connections. With two software selectable RS-232/422/485 serial ports and two Gigabit Ethernet ports, the MPC-3121 panel PCs support a wide variety of serial interfaces as well as high-speed IT communications, all with native network redundancy. The MPC-3121 panel PCs are designed for the -40 to 70°C temperature range, and come with a fanless, streamlined enclosure for highly efficient heat dissipation. This makes the computers a reliable industrial platform for harsh, hot, outdoor environments like oil and gas fields, or drilling platforms. The MPC-3121 also features a 500-nit or 1000-nit LCD panel offering a sunlight-readable, projected-capacitive, glove-friendly, multi-touch screen, for an excellent user experience.
Models in this series (4)
| — | MPC-3121-E4-LB-CT-T | MPC-3121-E4-LB-SPK-CT-T | MPC-3121-E4-CT-T | MPC-3121-E4-SPK-CT-T |
| Panel | 12” (4:3) 500 nits | 12” (4:3) 500 nits | 12” (4:3) 1000 nits | 12” (4:3) 1000 nits |
| Touchscreen | PCAP | PCAP | PCAP | PCAP |
| CPU | Intel Atom® x6425E | Intel Atom® x6425E | Intel Atom® x6425E | Intel Atom® x6425E |
| RAM | 8 GB | 8 GB | 8 GB | 8 GB |
| Embedded Speaker | – | 1 (2 W) | – | 1 (2 W) |
| LAN | 2 | 2 | 2 | 2 |
| Serial | 1 | 1 | 1 | 1 |
| DI/DO | 4/2 | 4/2 | 4/2 | 4/2 |
| Power Input | 24 to110 VDC | 24 to110 VDC | 24 to110 VDC | 24 to110 VDC |
| IP Rating | IP66 (front) IP66 (rear) | IP66 (front) IP40 (rear) | IP66 (front) IP66 (rear) | IP66 (front) IP40 (rear) |
| Operating Temp. | -40 to 70°C | -40 to 70°C | -40 to 70°C | -40 to 70°C |
| — | Add to Quote View Bag | Add to Quote View Bag | Add to Quote View Bag | Add to Quote View Bag |
Specifications
Shown for MPC-3121-E4-CT-T. Per-model differences are listed in the selection grid above.
Computer
- CPU
- Intel Atom® x6425E processor (Quad core, 1.5M cache, 2 GHz)
- Graphics Controller
- Intel® UHD Graphics
- System Memory Pre-installed
- 8 GB DDR4 2400 MHz (32 GB max)
- System Memory Slot
- SODIMM DDR4 2400 slots x 1 (up to 32 GB max.)
- Supported OS
- Windows images and drivers supported: - Windows 10 IoT Enterprise LTSC 2021 (64-bit) - Windows 11 Professional (64-bit) - Windows 11 IoT Enterprise LTSC 2024 Linux image supported: - Debian 13 (kernel 6.10) Linux driver supported: - Ubuntu 24.04 LTS (kernel 6.10)
- Storage Slot
- CFast slot x 1 M.2 M-key 2242 sockets x 1
- Expansion Slots
- mPCIe slots x 1
- Speaker
- MPC-3121-E4-LB-SPK-CT-T/E4-SPK-CT-T: 1 (built-in, 2 W)
Computer Interface
- Ethernet Ports
- Auto-sensing 10/100/1000 Mbps ports (M12 push-pull X-coded) x 2
- Serial Ports
- RS-232/422/485 ports (M12 push-pull A-coded 12P) x 1
- Digital Input
- DIs x 4 (M12 push-pull A-coded connector)
- Digital Output
- DOs x 2 (M12 push-pull A-coded connector)
- Audio Input/Output
- 1 x Speaker out/Line out (M12 push-pull A-coded 8-pin)
- USB
- USB 2.0 hosts x 1 (M12 push-pull A-coded 5-pin), type-A connectors
- TPM
- TPM v2.0
Display
- Panel Size
- 12 in (viewable image)
- Aspect Ratio
- 4:3
- Active Display Area
- 245.76 (H) x 184.32 (V) mm
- Contrast Ratio
- 1000:1 (typ.)
- Light Intensity (Brightness)
- MPC-3121-E4-LB-CT-T/E4-LB-SPK-CT-T: 500 nits MPC-3121-E4-CT-T/E4-SPK-CT-T: 1000 nits
- Max. No. of Colors
- 16.7M (8-bit/color)
- Panel Type
- AAS
- Pixel Pitch (RGB)
- 0.240 (H) x 0.240 (V) mm
- Pixels
- 1024 x 768
- Response Time
- (Tr+Tf) 25 ms
- Viewing Angles
- 178°/178°
Touch Function
- Touch Type
- Projective Capacitive touchscreen (PCAP)
- Touch Support Points
- 4 points
- Glove Support
- Yes
Ethernet Interface
- Magnetic Isolation Protection
- 1.5 kV (built-in)
Serial Interface
- Bitrate
- 50 bps to 115.2 kbps
- Data Bits
- 5, 6, 7, 8
- Flow Control
- RTS/CTS, XON/XOFF, Automatic Data Direction Control (ADDC) for RS-485, RTS Toggle (RS-232 only)
- Parity
- None, Even, Odd, Space, Mark
- Stop Bits
- 1, 1.5, 2
Serial Signals
- RS-232
- TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- RS-422
- Tx+, Tx-, Rx+, Rx-, GND
- RS-485-2w
- Data+, Data-, GND
- RS-485-4w
- Tx+, Tx-, Rx+, Rx-, GND
Digital Inputs
- Isolation
- Optical: 3 kV
- Sensor Type
- Dry contact Wet contact (NPN)
- Voltage
- Dry contact @25 Hz: 0 to 30 VDC
- Dry Contact
- DI to COM Logic 0: Close to GND Logic 1: Open
- Wet Contact
- Source to DI: Logic 1: 3 VDC max Logic 0: 10 to 30 VDC
Digital Outputs
- Isolation
- Optical: 3 kV
- I/O Type
- Sink
- Current Rating
- Max. 200 mA per channel
- Voltage
- Logic 0: 200 mA (max. per channel), sink Logic 1: 24 VDC (typ.), 30 VDC (max.), open collector
LED Indicators
- System
- Power x 1
Power Parameters
- Input Voltage
- 24 to 110 VDC
- Power Consumption
- 51 W
Physical Characteristics
- Housing
- Metal
- IP Rating
- IPMPC-3121-E4-LB-SPK-CT-T/E4-SPK-CT-T: - IP66 (front) - IP40 (rear) MPC-3121-E4-LB-CT-T/E4-CT-T: - IP66 (front and rear)
- Dimensions
- 297 x 238 x 59 mm (11.69 x 9.37 x 2.32 in)
- Weight
- 3100 g (6.83 lb)
Environmental Limits
- Operating Temperature
- -40 to 70°C (-40 to 158°F)
- Storage Temperature (package included)
- -40 to 70°C (-40 to 158°F)
- Ambient Relative Humidity
- 5 to 95% (non-condensing)
Standards and Certifications
- EMC
- EN 55032/35
- EMI
- CISPR 32, FCC Part 15B Class A
- EMS
- IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m IEC 61000-4-4 EFT: Power: 2 kV; Signal: 1 kV IEC 61000-4-5 Surge: Power: 1 kV; Signal: 1 kV IEC 61000-4-6 CS: 10 V IEC 61000-4-8 PFMF
- Mechanical Protection Rating
- IEC 60529, IP code
- Safety
- IEC 62368-1 UL 62368-1
- Shock
- EN 50155 standard
- Vibration
- EN 50155 standard
Declaration
- Green Product
- RoHS, CRoHS, WEEE
Warranty
- Warranty Period
- System: 3 years LCD: 1 year
- Details
- See www.moxa.com/warranty
Resources
| Name | Type | Version | Date |
|---|---|---|---|
| Datasheet for MPC-3121 Series1.2 MB | Datasheet | v1.1 | Aug 19, 2026 |
| MPC-3000 Series Windows 10 IoT Enterprise LTSC 2021 (21H2) User Manual8.5 MB | Manual | v2.0 | Aug 18, 2026 |
| MPC-3000 Series Linux User Manual1.7 MB | Manual | v2.0 | Jul 15, 2026 |
| MPC-3000 Series Windows 11 Professional 2025 Manual6.9 MB | Manual | v1.0 | Jul 15, 2026 |
| Declaration of Conformity (EU/UK) for MPC-3101_MPC_3121300.1 KB | Declaration | v1.0 | Jul 07, 2026 |
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