car alarm

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richgamer

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#23215 22-Jun-2008 15:51

i was looking at a car alarm with immobilizer here:

http://www.aboutsound.co.nz/Dynatron.html

and the first model of car alarm(which is the cheapest) says:

the system is armed passively by the driver every time he/she wants to start the car

then it says:

opportunity for starting is allowed within 40 seconds before the system will automatically immobilize

so does this mean if a thief broke into my car they can do whatever they want to hotwire it as long as they do it before 40 seconds?

and how do alarms with glass break protection work? do they put a sensor on the window and if the window is smashed will the alarm go off? and will i need to get a new alarm sensor if this happened?

tonyhughes

Hawkes Bay
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#139738 22-Jun-2008 15:59

Their wording is a bit off.

Your car would be immobilised unless a transponder on the key ring was present near the ignition. No 40 second window when a theif arrives.

Glassbreak part does not require a sensor on the window - it is based on the frequency(s) of the sound glass makes when being broken. nothing to replace, other than the glass, the tacho and the fire extinguisher (My little race car got broken into last week).

Talk to an alarm specialist and they will advise you further.

garvani

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#139750 22-Jun-2008 16:37

I have the dynatron d3800.. Basically you disarm the alarm using the keyring remote.. Jump in the car, it wont start till you wave the transponder (which is built into the keyring remote) under the ignition. You then have 40 seconds (is a minute in my car) to start the car before the immobiliser will kick back in.. When you alarm the car the immobiliser dosnt kick in straight away either, it waits a minute (probably because i have a turbo timer actually!).
The glass sensor is a microphone that sits under your steering colum and works on frequencys as tony mentioned.

Adamal

544 posts

Ultimate Geek

#140583 25-Jun-2008 20:50

Dynatron are good marketers.

AVS are a better alarm. And my flatmate can probably do you a good deal on an alarm and installation.

alasta

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#140599 25-Jun-2008 21:55

The Mongoose alarm in my car re-arms itself if you don't start the engine and/or open the driver's door within about 20 seconds of pressing the disarm button on the remote.

It's really annoying because if I disarm it to load luggage into the car then I have to remember to disarm it again before shutting the tailgate, otherwise it re-arms and the shock from closing the tailgate triggers the alarm. I asked the auto electrician if he could disable this feature and he said that he couldn't because the insurance industry won't endorse an alarm unless it has idiot protection such as this.

ajobbins

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#142551 3-Jul-2008 14:52

alasta: The Mongoose alarm in my car re-arms itself if you don't start the engine and/or open the driver's door within about 20 seconds of pressing the disarm button on the remote.

It's really annoying because if I disarm it to load luggage into the car then I have to remember to disarm it again before shutting the tailgate, otherwise it re-arms and the shock from closing the tailgate triggers the alarm. I asked the auto electrician if he could disable this feature and he said that he couldn't because the insurance industry won't endorse an alarm unless it has idiot protection such as this.

I had a 5-star Uniden alarm in my last car and this had the same feature, but you could disable it (which I did). Was annoying becuase ever time the last door (or boot) was shut the alarm would chirp (and indicators flash) to let you know the alarm would arm in x seconds (I forget how many) so if you say closed the door, then opened the boot then opened and closed a car door again you would get 3 chips. Annoying.