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RTCU NX-910 - Professional Industrial M2M/IIoT Gateway

The RTCU NX-910 is a cost-effective version of the full-featured RTCU NX-900 that has certain features omitted for a perfect balance between price and functionality.

The differences between the RTCU NX-910 and the RTCU NX-900 are summarized in the table below:

The above comparison table can also be downloaded here.


The RTCU NX-910 device is based on the NX32L (NX32 for Linux) architecture, which embraces many new technologies and, at the same time, maintains full backward compatibility. This ensures already implemented and tested NX32 applications can execute with no changes.

The RTCU NX-910 shares the form-factor, power and I/O architecture of the popular RTCU AX9 encore, as well as the power and advanced NX32L features from the RTCU NX-900!
For a comparison between the RTCU NX-910 and the RTCU AX9 encore, please refer to the comparison table here.

The RTCU NX-910 is designed to meet the ever-increasing challenges on security, in that it offers full TLS on all major protocols and includes a hardened protected execution environment with dual-boot and automatic fallback and recovery.

The RTCU NX-910 device is an industrial-grade device that is designed from the ground up for professional M2M / IoT applications with its strong on-board I/O capabilities and multiple communication interfaces such as  LTE Cat. 1, Ethernet, dual RS232, dual RS485, and 1-Wire.

The on-board I/O system can be expanded almost indefinitely and completely transparently by adding Modbus I/O modules.

Technical Highlights:


  •  Based on the RTCU M2M Platform.
  •  NX32L (NX32 for Linux) execution architecture.
    •  RTCU IDE development tool.
    •  Operates under a full and highly optimized Linux variant.
    •  Open and extendable with the RTCU Platform SDK.

Hardware Core:

  •  Cortex-A5 32-bit ARM processor operating at 500 Mhz.
  •  Hardware floating point and DSP instructions.
  •  128 MByte LP-DDR RAM.
  •  512 MByte NAND Flash (filesystem).
  •  16 MByte NOR flash (system boot).
  •  128 KB SRAM with battery back-up (unlimited endurance).
  •  Real-time clock with battery back-up.


  •  Embedded firewall.
  •  TLS/SSL support with full certificate management.
  •  TLS/SSL support for all major TCP protocols.
  •  Hardware assisted encryption/authentication.

Wireless Communication:

  •  LTE Cat. 1 Cellular Engine for EMEA.
  •  Internal SIM card reader and support for eSIM.

Wired Communication:

  •  100 Mbps Ethernet LAN interface.
  •  1-Wire bus for accessories such as ID-button reader, temperature sensors, etc.
  •  2 x RS232 channels and 2 x RS485 channels.

I/O Interfaces:

  •  4 x analog inputs and 2 x analog outputs with 0..10 volt / 0..20 mA.
  •  5 x digital inputs and 4 x high power relays.
  •  4 digital inputs can be configured as IEC62053-31 Class A compliant.
  •  Expandable I/O with standard Modbus modules. 

User Interaction:

  •  4 x bi-colour LED and 4 x position DIP-switch.
  •  High-speed Mini-USB service-port connector.


  •  Temperature sensor.


  •  Fully digitized audio system.
  •  Transfer, store, and play audio.
  •  Digitized cellular audio.
  •  DTMF support for Interactive Voice Response applications.


  •  Internal flash drive with up-to 512 MByte capacity.
  •  Persistent memory and circular datalogger.
  •  Standard SD-CARD reader.

Power and Battery:

  •  Wide AC/DC power operating range from 100..260VAC / 8..36 VDC.
  •  On-board 1 Ah Li-Ion battery with intelligent charging.
  •  5/12/24V DC-out capability for powering external equipment.


  •  Housed in a ruggedized plastic encapsulation with cable glands.
  •  IP65 protected for outdoor usage.

Regulatory Approvals:

  •  Radio Equipment Directive, RED 2014/53/EU.
  •  EMC Directive, 2014/30/EU.
  •  RoHS Directive, 2011/65/EU.

For further information please refer to the data sheet and the technical manual below,
and the RTCU M2M Platform datasheet.

Product data sheet V1.02 (pdf)
Technical manual V1.04 (pdf)
Declaration of Conformity (DoC) (pdf) 
RTCU Open Source Software Licenses (pdf)


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