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SentryGSM3DAlarm provides a reliable, low cost solution for a wide range of monitoring and alarm messaging applications.

DIN Rail mounting, this industrial quad band GSM device can monitor up to 12 input/outputs, and send alarms, data, status or action messages to multiple recipients via SMS. Sentry Telemetry’s Windows-based software provides remote configuration of all alarm variables, message recipients' etc. Alarms can be sent to mobile phones, pagers and PC’s with a modem.


  • 2, 4 or 8 inputs
  • 2 A to D inputs
  • 1 to 4 outputs
  • Alarms sent via SMS
  • Actions programmable via SMS from PC or mobile phone
  • Remote control via SMS
  • Standard SIM
  • Quad band GSM
  • Up to 12 programmable messages
  • Up to 120 message recipients
  • Simple user configuration
  • DIN rail mounted
  • Internal/external antenna
  • CD Windows based software
  • OTAP remote provisioning


  • Quad band 850/900/1800/1900
  • 12 or 24 volt DC
  • DIN rails to DIN EN 50 022
  • Polycarb enclosure to UL 94 V.0


  • R&TTE Directive 1999/5/EC
  • Low Voltage Directive EN60950
    CE-approved logo CE approved
    WEEE compliant logo WEEE compliant

User Defined Parameters

Each input has up to 6 actions, incl:

bullet Outgoing text message
bullet Outgoing email
bullet Switching of relay
  • Message recipients
  • Message content
  • SMS or GPRS mode


  • Remote control of outputs
  • Remotely interrogate device to:
bullet Check GSM signal strength
bullet Check power supply
bullet Simulate alarm conditions
bullet Check/save/change user defined parameters


  • SentryGSM3DAlarm offers a cost-effective solution to OEMs, instrumentation, sensor and meter companies, MCC manufacturers, industry and factories. Already successfully integrated into client applications, our in-house application engineering team can develop custom telemetry and data management solutions.

Case Studies

Remote Sensing, Monitoring & Metering

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vl Oxfordshire Fire and Rescue Service vr