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home security system design

Former Member
Former Member over 14 years ago

I promise u I am not in the electronic security business.  I'm just a tech enthusiast & do-it-yourselfer.  As such, I had put together my own home security system yrs ago.  It's time to upgrade.  Mine has a telephone dialer/msg player that dials up several phone no.s and plays my pre-recorded msg to each, when the alarm is triggered.  I do not use a private monitoring co.  It calls me & police directly.

Seems 2 me that a big flaw in a home security system is dialing out over a land line whose wire can easily be cut, where it enters the house.

Where can I obtain a cellular base station unit (or how can I adapt a cell phone) to work with a recorded-msg-player and alarm center triggering  (my alarm center will trigger add on components by current signal or by relay contact closure).

Of course, why does anyone build it himself & skip the monitoring co., but 2 save $.  So, I don't want 2 pay 4 a cell phone no & contract just 4 a cell phone that will sit unused most (hopefully all) of the time.  I'd like 2 adapt one of those pay-only-for-the-calls-u-make phones if possible (? Jitterbug or whatnot).  I know that phones fron defunct contracts will still work to call 9-1-1, but I'd like it 2 call me also, so I can go 2 web site 4 my web cam.

FINALLY - THE QUESTION - do u know of such device avail 4 sale anywhere, OR do u want 2 design such a product to market 2 the various do-it-yourself home security alarm mfgrs (GE, X-10 Powerhouse, etc)

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  • Former Member
    0 Former Member over 14 years ago

    If you've already got a working autodialer, why not try this:

     

    Build a reasonably long ranged radio link to activate it (UK allows 500mW at 458MHz, so a few miles range is quite possible). Then re-site the autodialer in the home of a friend/family member/co-worker, connected to their landline. Then offer them the same service (siting their alarm dialer on your landline).

      No GSM costs, and a burgar cutting your landline doesn't disable your alarm

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  • Former Member
    0 Former Member over 14 years ago

    If you've already got a working autodialer, why not try this:

     

    Build a reasonably long ranged radio link to activate it (UK allows 500mW at 458MHz, so a few miles range is quite possible). Then re-site the autodialer in the home of a friend/family member/co-worker, connected to their landline. Then offer them the same service (siting their alarm dialer on your landline).

      No GSM costs, and a burgar cutting your landline doesn't disable your alarm

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