GSM Alarm Dialler voice / SMS Text autodialler / communicator
gsm alarm
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GSM Alarm Dialler

GSM Alarm Diallers, using speech and SMS text, allow alarm and other information to be transmitted where no fixed telephone is available or a second backup transmission medium is required. Typical uses are in applications for Security Alarms, Pump control, Process control, portable security, Temporary security, boats, aircraft etc.

GSM Voice / SMS Alarm Communicator ( GSM-VAC4+ )

An inexpensive and reliable GSM Alarm Dialler that transmits pre-recorded speech messages to different telephone numbers. The GSM network is used and it is especially suitable for locations, where there is no fixed telephone. Comes in wall mount metal box with antenna, antenna lead and control PCB/GSM Module. When an alarm input is activated it automatically dials pre-programmed telephone numbers and a speech message is played and / or a SMS text message is sent. Compatible with all SIMS, "pay as you go" or "contract ". Choose SIM to suit best network coverage in the area the unit is to be installed. We can supply SIM and also program and test it to your specifications to save you time. See our price and shop page

GSM Alarm Dialler Description

  • 4 alarm inputs (either N.O, N.C. +12V trigger, GND Trigger ). and 4 remote control outputs. ( open collector )
  • 4 recorded speech messages up to 10 seconds / input and 4 SMS text messages.
  • Contact ID mesages to Alarm Receiving Centre.
  • Listen-in and talk-back functions. ( Optional )
  • Easy programming of up to 10 telephone numbers.
  • Programming into SIM card using a GSM phone or by SMS messages or using USB SIM card dongle and PC program.
  • Headset for recording / plyback messages.
  • Reset input for cancelling dialling.
  • Easy installation and programming.


  • Input Voltage: 9.0 V to 25 V DC. Current: 40mA ( idle ), 350 mA ( active ).
  • Box dimensions 170 x 110 x 35 mm , PCB Dimensions: 105 x 76 mm
  • Steel box with Lid and back tamper switches.

GSM Alarm Downloads -

GSM security Autodialler pdfGSM-VAC4+ Sales Literature-------- Connections Diagram----------- Manual

GSM security Autodialler pdfGSM-VAC4+LITE Sales Literature ---- Connections Diagram -------- Manual

gsm alarm dialler

GSM-VAC4+ GSM Alarm Autodialler

Click on image above to see inside.

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