Everything for Electronics
Nuts & Volts Magazine (August 2012)

Build the Alarm Autodialer

By Dan Gravatt    View In Digital Edition  

This device will detect and report several common failures with household systems, so you can deal with them while they are still easy to fix. It's inexpensive ($60 or less, depending on your parts collection), easy to build, and doesn't require any contracts with monitoring services.


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Auto Dialer

PBP and HEX file