Motion sensor?????, I don't know of any alarm that still uses a motion sensor.

Maybe you mean proximity sensor, sometimes called a motion sensor, or maybe an impact sensor, most alarms nowadays come with a dual stage impact sensor, not really effected by motion. 94

You get what you pay for.

Nothing is impossible, the impossible takes longer and costs more money.

The guy who installed it for me said there were two types or as you call "stages" if you want to keep the nuances straight, and I got the more sensitive one. However, it takes a lot of impact for the alarm to go off and seems kind of useless against good thieves I would think. So I was wondering if I had options. (I'd ask my install but that cannot be till another few days).

Where is the shock sensor mounted? This is key.

what he said. Proximity sensor will require some precision tuning but it's worth it. Suspended Hatch and Wrx-killer-sti-eater have provided details in the stickies (and cause for the alarm).

Do not get the DEI unit, get this: http://www.crutchfield.com/App...p=153

I have installed more then a few Audiovox/Prestige systems and on all of them the impact sensors have worked very well.

If installed and adjusted properly you should be able to kick a tire without anything happening, kick it real hard or hit the cars body or glass "softly" and the pre warn should trigger, crack a lug nut on a tire should trigger the alarm into full alarming mode or at the very least trigger pre warn, any "hard" hit on the car should trigger full alarming mode, you should not need to break the glass to trigger full alarming mode.
Adding another sensor, as opposed to replacing the shock sensor, is a good idea, the more layers the better, I would add a proximity sensor, even a tilt sensor, however they will also be ineffective if not installed and adjusted properly, and as mentioned by B18C_EJ8 any sensor you add to the same input must be diode isolated, [triggers] from each other.
Maybe your model has an extra sensor input, IM me the model number and I can help a little more.

You also need to find out exactly where and how the impact sensor is mounted.

Quote, originally posted by Unbreakable6161 »

shock sensors are worthless,

They are not worthless, that's like saying alarms are worthless, you said it yourself...

Quote, originally posted by Unbreakable6161 »

Where is the shock sensor mounted? This is key.

Not just where, but how it is mounted and how it is adjusted. 94

You get what you pay for.

Nothing is impossible, the impossible takes longer and costs more money.