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A5 GSM (Cell Phone) Fire/Burglar Alarm Auto-Dialer and SMS Sender SIM Card dialer


The A5 GSM Alarm Dialer is ideal for use in Burglar or Fire Alarms as a universal fit cellular phone (GSM) Auto-Dialer/SMS Message Sender (mobile phone based dialler).  It allows remote home/business security monitoring without a phone line.

With 6 inputs both the intruder alarm bell and set/unset status and the fire alarm bell and fault output can be monitored. If the alarm is triggered a user customisable SMS message can be sent to up to 500 numbers. Additionally up to 500 numbers can be called to instantly alert users to the alarm sounding.

Additionally emails can be sent when either input is triggered along with SIM card balance and allowance information.

Ideal for use in Intruder and Fire Alarms as a universal fit Auto-Dialer/SMS Message Sender

For use with an intruder alarm please see this video



 For use with a Fire Alarm Panel please see this video



A complete list of accepted telephone numbers can be viewed remotely via SMS text message or using the PC software available from our website


Balance checking is available using the FORWARD, SMS and DIAL commands (see manual).


The manual can be downloaded from here:


Maunal:  A5.02 F6.05


Quick Start Guides available here:


QSG A5 v6.05

Email Quick Start Guide


Please note the board is supplied with a suitable antenna and 10cm SMA cable only.


The A5; Burglar alarm system that calls you without using a landline phone line


The enclosure is available as an option.


Anything else I need to know?


All PCBs are supplied with a quad band stub antenna and a PCB to aerial connector cable (~15cm long).  Anrtennas should be mounted outside of metallic enclosures.  The PCB connector is a U.FL connector and the aerial connector is a standard GSM SMA connector shown below (should an extension cable be required).


SMA Conector for use with GSM Alarm Dialer


Our optional sticky backed antenna makes installation quick and simple however this can only be mounted on non-metallic thin surfaces.  Various antennas are available from our wesbite - please see 'Accessories'. 



When deciding on which network to use we recommend that you search on the network provider home page to ensure you will receive a good signal in your geographic location. Please note GSM products do not work with 3G only networks such as 'Three'.  The Site Finder website is very useful for finding your closest mast and network


For indoor appplications the PCB fits into the Hammond 1591B enclosure.


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