Compact GSM II - 2G.IN2.R2

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  • Product ID
  • Package size
    170x120x35 mm
  • Package weight
    0.26 kg

Contact controlled communicator, which can be used as an optional reporting device for alarm control panels, for reporting states of switches or outputs by call and SMS, or for remote control through relay outputs. Cost-free gate opening function, optional temperature measuring and control.

Main features:

  • GSM communication
  • 2 NO/NC contact inputs
  • 2 NO relay outputs
  • Possibility to connect a temperature sensor (easyTEMP Compact)
  • Programming by using software through USB or modem connection, or by SMS
  • Supported operating system: Windows 10

Application area:

  • Optional GSM communicator for alarm control panels
  • Notification through voice call and SMS about the state of switches
  • Remote relay control / control of electric gates by phone call for free
  • Temperature monitoring and intervention through the outputs (optional) 


  • GSM voice call to 4 user phone numbers on input activation with recordable message (2x6 sec.) or siren tone
  • Reporting to monitoring station with Contact-ID protocol
  • SMS sending with a configurable message for each event
  • Events:
    - alarm on the 2 inputs
    - temperature threshold alarms (optional)
    - temperature sensor supervision (optional)
    - low voltage alarm
    - periodic test report 
  • Control of relay outputs (monostable/bistable):
    - by input events
    - by phone call for free
    - by temperature events (optional)
  • Adjustable input sensitivity
  • Car alarm adaptation (monitoring of rhythmical regular impulses)
  • Forwarding of incoming SMS messages (e.g. balance information, etc.)

Technical specification

  • Transmission channel
  • Frequency band
    850/900/1800/1900 MHz
  • Operating temperature
    -20 °C – +70 °C
  • Supply voltage
    12-30V DC
  • Current consumption (maximum)
    200 mA @ 12 VDC
  • Current consumption (nominal)
    50 mA @ 12 VDC
  • Casing
    PCB + metal case
  • Terminal connector design
    Mounted on the panel
  • Dimensions
    100x70x19 mm
  • Weight
    80 g


  • Contact inputs
  • Configurable inputs (NO/NC)
  • Adjustable input sensitivity


  • Relay outputs
  • Output control through free GSM call
  • Output control by SMS


  • GSM voice call
  • SMS sending
  • DTMF-based reporting to monitoring station

Supported protocols

  • SIA DC-05 (DTMF) protocol


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


  • User phone numbers for forwarding incoming SMS messages
  • User phone numbers for reporting
  • User phone numbers for output control
    4 / Unlimited

Remote monitoring

  • Monitoring station phone numbers
  • Individual reporting to monitoring station

Other functions

  • Configurable internal Contact ID event codes
  • Security password
  • Caller identification
  • Possibility to connect temperature sensor (easyTEMP)
  • Individual SMS sending to user phone numbers with predefinable message
  • Temperature monitoring and intervention through the outputs (optional)
  • Periodic test report
  • Alarm sending to user phone numbers with siren tone being used
  • Alarm restriction
  • Pre-recordable voice message sending to user phone numbers
    Yes / 2 x 6 sec
  • Selectable confirmation request from user phone numbers
  1. The device does not activate the relay output on an incoming call. Why?

    The caller ID identification must be enabled on the inserted SIM by the GSM service provider. Without this, the device will be unable to identify the incoming call ID identification. Insert the SIM card (which is in the device) into a mobile phone; call the customer service of the GSM service and enable this service in the menu. Make sure you set the timing of the relay output (if the timing is 0, the relay will not activate).

  2. Despite the fact that I received the call, the device makes a recall. Why?

    Perhaps the machine is set that the call must be acknowledged. In this case, it will redial during the alarm time, until you acknowledge the alarm. You can do this by pushing the asterisk * button.

  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



  • Compact GSM II EN-HU-DE Quick Start Guide
    2020.11.18 868.34 KB Download
  • Compact GSM II v2-50-2209 Manual EN
    2021.07.27 1.29 MB Download
  • Compact GSM II Programming software v1-20 (Signed)
    2014.07.07 540.03 KB Download
  • Compact GSM II volume adjusting application (Mixer.exe)
    2012.06.22 1.13 MB Download
  • TELLtest_HID_logger_v2
    2017.03.22 108.16 KB Download
  • Compact GSM II CE
    2012.11.07 1.37 MB Download
  • Compact GSM II firmware v2-71
    2018.11.28 2.53 MB Download
  • Compact GSM II Bootloader update
    2014.11.06 2.38 MB Download
  • Firmware upgrade instructions
    2020.11.04 857 bytes Download
  • Bootloader update instructions
    2014.11.06 1.95 KB Download
  • Release notes (EN)
    2018.11.28 7.95 KB Download
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