4G Serial Modem/Gateway 4G Serial Modem/Gateway

4G/3G Programmable Serial Modem with 1 DI, RS232 and RS485


The MTX-4G-JAVA-T AUS is an innovative and powerful all-in-one solution for the demanding M2M and IoT applications, enabling 4G/3G data transmission, CSD and SMS.

With Java J2ME programmabilty and multiple interfaces (RS232, RS485, USB and 1 digital IO) users can avoid the need for further hardware, thereby shortening time to market and reducing costs.

The MTX-4G-JAVA-T-AUS modems are compatible with MTX-Tunnel, an optional firmware that can be executed in the MTX modems to use them as gateways, SMS alarm devices, data loggers and more.


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Java Compatible Java Compatible
DynDNS or NoIP DynDNS or NoIP
Alarm, control & configuration Alarm, control & configuration
Modbus RTU/TCP Modbus RTU/TCP
Extended Temperature Extended Temperature
USB and Serial Interfaces USB and Serial Interfaces
  • 4G with 700MHZ Band 28 and fallback to 3G
  • 1 x RS232 and 1 x RS485
  • 1 x digital input
  • Compatible with MTX Tunnel firmware, enabling gateway, data logging and alarm functionality
  • Modbus TCP/Modbus RTU (with MTX Tunnel fw)
MTX Tunnel enables IoT Applications
Related Applications
Product Applications

Serial Cable Replacement

Scenario We have 2 devices RS232 (115200.8, N, 1 flow control HW) linked by a serial cable through which data is sent. The intention is to replace this serial cable by a transparent RS232-4G-RS232 link. Solution 2 MTX-4G-JAVA-IOT AUS or MTX-4G-JAVA-IoT AUS modems   +   MTX-Tunnel firmware The equipment does not contain a PC, nor is it intelligent, and the internal control programs cannot be changed. The equipment can be considered as “black boxes” with RS232 serial ports that cannot be […]

Serial Cable Replacement
Product Applications

Modbus TCP/Modbus RTU

Scenario We need to monitor remote ModBus RTU devices with the RS485 port from a central Server which has a software application to control ModBus TCP. MTX-Tunnel will create a ModBus TCP/ModBus RTU GPRS gateway. Solution MTX-4G-JAVA-IOT AUS or MTX-4G-JAVA-IoT AUS modems   +   MTX-Tunnel firmware ModBus remote devices to be available at all times, so the modem connected to those devices is permanently connected be IP waiting for incoming requests to the ModBus TCP port number 502. SIM cards provisioned […]

Modbus TCP/Modbus RTU
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