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  • Product ID
  • Package size
    230x160x35 mm
  • Package weight
    0.27 kg

Main features:

  • GPRS communication
  • Management of 2 independent SIM cards
  • Forwards incoming SMS messages to 2 phone numbers
  • Stores the last 1000 events in the event list
  • 4 configurable NO/NC contact inputs onboard and optional 24-input expansion module
  • Reports the state of 4+24 inputs to monitoring station
  • Configurable Contact ID codes for each input and custom event
  • 2 configurable NO/NC relay outputs (monostable, bistable, state switching), controllable by events and/or by user
  • Backup battery management
  • GPRS channel supervision
  • Supply voltage supervision
  • Status LEDs

Technical specification

  • Transmission channel
    GSM / GPRS
  • Frequency band
    900/1800, 850/1900 MHz
  • Operating temperature
    -20 C - +70 C
  • Supply voltage
    9-30 VDC
  • Current consumption (maximum)
    500mA @ 12VDC
  • Current consumption (nominal)
    120mA @ 12VDC
  • Casing
    No (PCB)
  • Terminal connector design
    Mounted to panel
  • Dimensions
    150x110x19 mm


  • Contact inputs
    4 / 28 (with expansion module)
  • Configurable inputs (NO/NC)


  • Relay outputs
  • Output control by SMS
  • Output activation on GSM fault

Supported protocols

  • TEX protocol


  • Programming method
    USB / IP / GSM data call (CSD)
  • Programming software


  • User phone numbers for forwarding incoming SMS messages

Remote monitoring

  • Monitoring station IP addresses
  • Individual reporting to monitoring station

Other functions

  • Battery connection feature, intelligent charging
  • Configurable internal Contact ID event codes
  • Built-in internal clock
  • Security password
  • Event logs / Number of stored events
    Yes / 100
  • Dual SIM management
  • Periodic test report
  1. The device is not connecting to the GPRS net. Why?

    Check the APN settings, the power supply and power requirements of the module, as well as the GSM antenna connection and signal strength.

  2. After installing the programmer software there is an error message saying that the DLL file is missing and it can not start.

    Some operating systems create a missing DLL file after connecting to the module. Connect the module through a USB to the computer, and after this start the programming software again.

  3. The module sends a long line of continuous letter / sequence SMS message to the SMS forwarding featured phone number. What is the reason for this?

    This phenomenon happens when you do not receive a regular SMS (text) to the phone module, but some kind of a multimedia message (MMS photo) or some other encoded message (for example, encoded Cyrillic letters with accents or other capitalization). An industrial phone module is not able to handle this, that's why the mentioned letters/sequences are converted into Unicode form and are forwarded to your phone (depending on the size of the message 1 MMS can be received in 3 or 4 SMSs). Please note that in this case there is no problem with the device itself, but this phenomenon is caused by the above-described reason. If this occurs regularly, there is a good chance that it is an advertising / marketing message sent by the service provider, which can only be stopped by either asking the service-provider not to send such messages to this given phone number or by turning off the message forwarding function (in the settings: delete the SMS forwarding phone number), if this function is not absolutely necessary.

Message to the customer service



  • GPRS-GSM ProCom Programming software v1-24 (without DotNET)
    2014.02.17 478.99 KB Download
  • GPRS-GSM ProCom Programming software v1-24 (DotNET included)
    2014.02.17 236.74 MB Download
  • Release notes
    2014.02.17 308 bytes Download
  • GPRS ProCom F Firmware S900/S900R v1.00.0115
    2018.04.25 453.28 KB Download
  • GPRS ProCom F firmware S900/S900R v1.00.0113
    2017.02.22 453.28 KB Download
  • GPRS ProCom F firmware S900/S900R v1.00.0106
    2013.04.16 452.72 KB Download
  • Release notes
    2017.06.02 645 bytes Download
  • BootloaderX22 firmware upgrade instructions (EN)
    2012.08.17 1.86 KB Download
  • BootloaderX22 EN firmware upgrade utility
    2012.08.17 1.59 MB Download
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