The M2M Modem IO® device is suitable for reading out data from various industrial, security, telemetrical or metering applications or systems as well as directly forwarding control commands to the M2M server or another system.

It can be connected to these devices and communicate on various protocols (e.g. PLC, ModBus), then transmit tansparend the pre-defined or derived data to a target machine or system, through reliable GPRS network.
Due to the several industrial interface types and input/output ports, it can be connected to almost any kind of PLCs, controller PCs or systems by using our target-oriented, specialized software and tools.

The industrial modem is also able to read out the signals of the inputs (8pcs) and monitor the 4pcs outputs.

With the attachable Contact ID extension module, the modem is also capable of generating alarm signals and transmitting these events (in compatible format) to the dispatcher center in case of signal/status changes.


Recommended usage

  • Monitoring solutions (ATM bank automatons, boilers)
  • Surveillance (signal transmission to the centre)
  • Transparent data transmission of industrial/measurement systems
  • Lift monitoring, signal transmission
  • PLC communication (transparent, filtered, data collection)
  • Surveillance and monitoring of digital outputs


  • Industrial modem into a roboust case
  • Memory area for store programs and incoming data (2Mbit EEPROM, 128kB RAM)
  • Modular construction (expandable features with expansion modules)
  • Watchdog circuit (system monitoring)
  • Supporting mobile network standards (GSM/GPRS), Gemalto MC55i module:
    4-band (850/900/1800/1900MHz)

    • GPRS Multislot Class 10 – 86kbps DL, 43.2 kbps UL
    • GPRS Mobilestation Class B
    • Data (assynchronous, non-transparent GSM data transmission (RLP), speed rates: 2.4, 4.8, 9.6 kbps, CSD max.: 14.4Kbps, USSD, V.110, CS 1-4
    • SMS, Voice, Fax
    • PPP stack
    • AT commands
  • Connecting on serial port (RS232)
  • Operation LEDs
  • CE certification



  • RTOS kernel multitasking system
  • Especial applications for the industry with Modbus Communication:
    • Readout of Modbus registers
    • Transparent or filtered data transmission (via GPRS)
    • TCP/IP Stack (services: FTP, TCP, IP, UDP, ICMP, HTTP, POP3, SMTP)
  • The incoming signal changes can be converted as alarm signals (in Contact ID format)
  • Local configuration on serial port, depending on the application
  • 3rd party application integration to the system, custom development
  • Compatible with PLC systems



  • 1x RS232 serial connector (DSUB9)
  • 1x internal connector for expansion modules
  • 1x power connector AC/DC (terminal block)
  • 8x input (contact/voltage), configurable by software – (terminal block)
  • 4x relay output (terminal block)
  • SIM card bay (internal)
  • 1x SMA-M antenna connector, 50 Ohm



  • Current:  40-65 A/12V (standby) 130mA (1800MHz 1W/900MHz 2W)
  • Power adapter: 12VDC
  • Current: stand-by: 20mA, average: 130-150mA, max. 300mA-350mA
  • Input high signal level: 5-24V
  • Input low signal level: 0-1V
  • Current inactive state: 5-7 mA
  • Switchable voltage/current: 0.5A 125VAC, 1A 24VDC



  • Power voltage
  • Status of input lines
  • Status of output lines
  • Operation status
  • GSM status



  • Dimensions (PCB): 150x100x40mm
  • Case: the standalone PCB is also available, available with industrial aluminum case with accumulator, recharger and antenna)
  • The PCB can be fixed/mounted with 4pcs of screws
  • IP51 protection
  • Operation temperature between -20°C and +55°C at 5 – 95% rel. humidity



  • CID (Contact ID) board
    • Genearetes simulated analog line, where can communicate with analog devices on GSM network
    • Analog phone line connection (the primary configurable to GSM or analog)
    • Analog phone output line for further devices
    • Receiving signals of online alarm systems and signal transmitting on phone line or GSM network
    • Generating Contact ID signals from incoming signal changes
    • Battery charger PCB
  • Voice module (transmitting the voice communication)


  • 12VDC, high capacity batteries
  • Various type and gaines SMA antenna models


This product assigned with CE symbol according to the EU regulations. The product fits to R&TTE 99/5/CE, FCC, ROHS standards and requirements and the standards and directives.

Pay attention to the following products


M2M Modem Plus

Serial interface connected GPRS modem


M2M Modbus RS485 IO

4-port RS485 Modbus TCP industrial modem with 2G communication for industrial PLC & Scada systems, impulse signalling and smart metering


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