Telephone Dialler for Burglar Alarms

Everyday Practical Electronics, August 2006

Now you can beef up your home's security system with this dialler
add-on unit, It will dial a preprogrammed telephone number and send
a warning tone via a modem when its input is triggered.

Although intended primarily to connect to the output of an alarm
system, it could be used for any purpose where you need to be notified
immediately when an event has occured.

PIC 16F84 based system, programmable via RS232. No direct connection to the phone line
necessary: uses a standard modem tomake and answer calls. Cheap and easy to build.


Free source code available for download from 
http://www.epemag.wimborne.co.uk/downloads.html

Parts are available from the usual component sources. Please note
that EPE does not provide kits but many of the requirements can
be met by our advertisers.

Preprogrammed PIC microcontrollers are available from
www.magenta2000.co.uk if you do not wish to program your own chip.

Please refer to the EPE web site for details of ordering back issues,
subscriptions etc.

http://www.epemag.wimborne.co.uk

Last updated 14th July 2006