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Article #717

Re: Motion sensors in car alarms

#717
From: Heneghan
Date: Fri, 21 Feb 1986 19:36
21 lines
1466 bytes
> [I posted the following article a week ago -- but since I have seen
> absolutely no feedback on it, I am assuming it was somehow lost and
> am therefore posting it again. -- RBW]
> 
> Most automobile alarm systems today seem to include a "motion" or
> "impact" sensor -- either a simple weighted spring, or a sophisticated
> electronic device -- which sets off the alarm if the car is hit or
> jarred (as, for example, during an attempted tow).
> 
> I seriously question whether these sensors are really useful.  I tend to
> think they are more trouble than they are worth.
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The switch is mercury activated and you can adjust how sensitive you
want it. I think you'd want it for towing pirates or hit and runners.
Most alarm systems include them and they effectively bring about 
public interest as the crime is committed.

					Joe Heneghan
					
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Path: arc1-ca.pugleaf.net!utzoo!linus!philabs!cmcl2!harvard!talcott!panda!genrad!decvax!bellcore!ulysses!mhuxr!mhuxn!ihnp4!ihlpf!heneghan
References: <8927@ucla-cs.ARPA> <9199@ucla-cs.ARPA>

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From: heneghan@ihlpf.UUCP (Heneghan)
Newsgroups: net.auto.tech
Subject: Re: Motion sensors in car alarms
Message-ID: <336@ihlpf.UUCP>
Date: Fri, 21-Feb-86 14:36:40 EST
Article-I.D.: ihlpf.336
Posted: Fri Feb 21 14:36:40 1986
Date-Received: Mon, 24-Feb-86 06:33:12 EST
References: <8927@ucla-cs.ARPA> <9199@ucla-cs.ARPA>
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Organization: AT&T Bell Laboratories
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