Add siren to motion detector only?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=80956
Printed Date: May 17, 2025 at 7:50 PM

Topic: Add siren to motion detector only?

Posted By: passat 5.5
Subject: Add siren to motion detector only?
Date Posted: July 30, 2006 at 7:44 AM

In this thread I got some excellent advise-Thank You!- for adding a motion detector to my Passat 5.5:

https://www.the12volt.com/installbay/forum_posts.asp?tid=80441&PN=1&tpn=1

I now have the 508 Double Guard installed for the inside only and tied in with the Passat alarm system (hood).

Question:

Is it possible to connect a siren so that it gets only triggered by the motion sensor, instead of, or in addition to, the car horn?

Replies:

Posted By: Big Dog
Date Posted: August 08, 2006 at 11:41 AM

I've done it by using the output of the 504 to drive a relay to drive the siren. Interesting results! I suppose 508 will work as well.

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