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SentryGSM3DMulti is an industrial quad band GSM device for the monitoring, control and programming of up to 11 I/O's.

DIN rail mounted, it can send alarms, data, status or action messages via SMS to multiple recipients. Relay outputs can be configured to switch, control and operate external devices, whilst an RS232 comms port provides full integration with PC, PLC, HMI or bespoke process and control equipment. Windows based software enables remote configuration of all variables, message recipients' etc.

Clients find the SentryGSM3DMulti adaptable and easy to use, providing a highly reliable low cost solution for OEMs, sensor, meter and instrumentation companies, MCC manufacturers, industry, factories and utilities.


  • 6 inputs
  • 2 A to D inputs
  • 4 outputs
  • RS232 comms
  • 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


  • What is the maximum message length?
    Each message has 150 characters combining serial numbers, process parameter, alarm/fault text etc.
  • What can we interface with and is a PLC required?
    The device by name is multi function and the RS232 allows communication with process PLC, HMI and/or PC’s.
Remote Sensing, Monitoring & Metering

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