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how do alarm sirens work? can you pulse them?

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Old 11-01-2001, 07:12 PM
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how do alarm sirens work? can you pulse them?

i'm curious, how do the alarm sirens work? if you feed them power, will they just make noise?
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Old 11-01-2001, 10:43 PM
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Most sirens take a 'constant' 12V... they cycle their 'sounds' automatically... no need to pulse the 12V to them...
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Old 11-02-2001, 12:20 AM
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Originally posted by Chunger
Most sirens take a 'constant' 12V... they cycle their 'sounds' automatically... no need to pulse the 12V to them...
hmm..do the maximas stock alrams have a wire that sends a constant pos or neg signal when triggered? i'd like to set up a shock sensor /w a siren for my max. it'd be like 20$ and a lot cheaper than a real alarm
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Old 11-02-2001, 08:34 AM
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There's a lot of weakness to the factory alarm but if you really want to...

You can add a shock sensor... Look for Russ's post on how to do it.

Why not just buy a set of air horns (about $25) and splice them into the horn... much louder and you can use it with the horn too!
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Old 11-02-2001, 02:27 PM
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OEM outputs pulse +12V. It's possible to turn a pulse +12V to a constant 12V with relays. I got lazy and just installed air horns.

Originally posted by ngthing


hmm..do the maximas stock alrams have a wire that sends a constant pos or neg signal when triggered? i'd like to set up a shock sensor /w a siren for my max. it'd be like 20$ and a lot cheaper than a real alarm
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Old 11-02-2001, 11:47 PM
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yah, I've got air horns already, I'm going to set up a shock sensor /w a siren that runs swithced off of the OEM alarm as well as have it chirp on arm/disarm...maybew
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Old 11-03-2001, 05:25 AM
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Does anyone know where to get a doulble shock sensor for Viper alarm or AKA for DEI product?
Also, anyone knows how to add second siren and how to setup backup batteries for them? Where can I find help forum specifically for alarm help or quality DEI alarm parts on the internet? Many thanks in advance!

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Old 11-03-2001, 08:24 AM
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any local shop that sells DEI alarms!
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Old 11-03-2001, 09:39 AM
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Ho Ho Ho~ HECK NO man..
I went to the place where they hook up Vipers and they told me $40 for one freaking shock sensor! I told him you ain't gonna rip me off and I took off man..
Come on guys! I'm sure someone knows!
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Old 11-03-2001, 01:42 PM
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Originally posted by sickmen
Ho Ho Ho~ HECK NO man..
I went to the place where they hook up Vipers and they told me $40 for one freaking shock sensor! I told him you ain't gonna rip me off and I took off man..
Come on guys! I'm sure someone knows!
I don't know if the DEIs usea negative triggeror pos trigger, but here's a shock sensor and a proxy sensor:

http://cgi.ebay.com/ebaymotors/aw-cg...160085&r=0&t=0

http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1292855609
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Old 11-03-2001, 04:05 PM
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EWO~ that thing looks so cheap man... plus the radar sensor will not work on my Max because my window is very dark tinted(metalized)...
Well, thanks anyways.
Come on guys I'm still waiting~
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Old 11-04-2001, 01:04 AM
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Originally posted by ngthing


I don't know if the DEIs usea negative triggeror pos trigger, but here's a shock sensor and a proxy sensor:

http://cgi.ebay.com/ebaymotors/aw-cg...160085&r=0&t=0

http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1292855609
They have both - door triggers as well as + ones (e.g. Ford cars)
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