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Anyone know of a decent alarm?


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Andyman692 
Member - Posts: 35
Member spacespace
Joined: March 09, 2002
Location: United States
Posted: March 09, 2002 at 10:16 PM / IP Logged  

I kinda messed up an got a 1 AUX single stage alarm, so when a car drives by with a riced up muffler, it goes off... i just need dual stage 2 AUX, most alarms have the same basic features, right???

Thanks/!

Andy D
Kenwood V6017
Pioneer 552
Ugli 
Member - Posts: 3
Member spacespace
Joined: March 10, 2002
Location: Canada
Posted: March 10, 2002 at 11:27 AM / IP Logged  

How about just turning down the sensitivity on your single stage?  Car alarms are so common now that hardly anyone pays attention anyway, why not set yours so that it only howls if there is a damned good reason?  It's the old "crying wolf" thing... everyone learns to ignore an alarm that never shuts up.

However, there are a few ways to make your own dual-stage with some diodes, relays and a dual-stage shock sensor, but it's not "smart" like some of the built in ones (e.g. it won't go to full alarm after X number of warnings).  Here are the basics, which you should use *at your own risk* and assumes that you know what you're doing --

-- Wire a relay so that the "warn" stage from your sensor, almost always a ground, triggers a short pulse to your siren.  This relay should only be live when the alarm is on (you can use the starter disable ground for this with a second relay to switch polarity and send positive to the other side of the first relay coil when the alarm is active), otherwise your warn-away will be chirping all the time.  Of course, the warn-pulse from the sensor, the starter disable ground from your alarm and the positive wire running from the warn relay to the siren should *definitely* be run through diodes.

I think that's right -- it's been a few years since I built one of these.  Feel free to correct me.

Ugli


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