DEI 508D Field Disturbance Sensor Problem

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=58450
Printed Date: July 07, 2025 at 1:58 PM

Topic: DEI 508D Field Disturbance Sensor Problem

Posted By: aaalouie
Subject: DEI 508D Field Disturbance Sensor Problem
Date Posted: June 27, 2005 at 3:23 PM

I've got a Ultrastart 4560M alarm with remote start on my Jeep Wrangler. I decided to add a field disturbance sensor since the top is staying off during the summer. I purchased a DEI 508D from one of our distributors and put it in today. The problem is that the pre-warn first stage output of the sensor is 500ms which is too long of an output for the Ultrastart alarm. It causes the alarm to go off instead of pre-warn chirp. The alarm needs a 250ms pre warn input. Is there any way to adjust the output duration of the sensor?

Replies:

Posted By: Teamrf
Date Posted: June 27, 2005 at 6:10 PM

I don't think there is a way to do it on the 508. Is there another output from the alarm that is a longer pulse?

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~The Rookie~
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Don't let the smoke out of your equiptment..it doesn't go back in.

Posted By: aaalouie
Date Posted: June 27, 2005 at 9:22 PM

That would work if the 2 stage shock sensor wasn't built in to the brain. If it plugged in, I could try tapping onto the pre-warn wire on it. I am going to try a different brand of sensor. I tried to get DEI Tech help to see if they have any suggestions, but they will only provide technical assistance to authorized reatilers of their product. posted_image

Posted By: aaalouie
Date Posted: June 27, 2005 at 9:26 PM

Posted By: aaalouie
Date Posted: June 29, 2005 at 10:16 AM

Anybody?