Bulldog UT-B2 shock sensor - any good?

newbie question here. i'd like to add a dual-stage shock sensor to my factory alarm ('02 hyundai elantra), which does not currently have (or support) any sensors other than door/hood/trunk switches. i wouldn't hook the triggers to the alarm unit (i could, usnig diodes), but rather i'd add it to the crimestopper pager that i've already added to the existing alarm unit. this way the shock sensor would trigger the pager but not the car's alarm, which i would prefer anyway. i really like the CS pager and know that it supports the addition of a dual-stage shock sensor. i have two questions: 1) are bulldog accessories like this one reputable? if not, what brand would you recommend? 2) are the triggers pos. or neg.?

most sensors are neg. if its a shock sensor, you will need a pos, neg and a trigger wire. the most common colors are: red green blue i have ton of dual zone sensors drop me your address in a PM and ill send one to you..no chargeGood Luck

David

Ace Security

813-376-9778

Tampa

Donate to the 12volt

Southpawboston, Just wanted to give you a few tips about the CS paging unit. If you want maximum range, and consistant paging ensure that you use a fixed antenna. And do not use the vehicles radio antenna. If the antenna is one that raises and lowers. Then you are losing out half the paging signal, due to the amount of time for the arial to rise. If the arial is a fixed antenna, again you are losing out on some broadcasted signal. Reason being, is that the facory antenna is not impedanced matched, nor is it of the proper height to maximize the gain in the signal. A standard CB antenna is 48" long, without a gain amplifier attached. Lastly, ensure that you do install the power supply directly too, the vehicles battery. This will ensure maximum power output from the system. Regards EVIL Teken . . .

dave-- thanks so much!!! i PM'd you the info... evil--thanks for the heads up. i installed the pager using the small fixed antenna that came with the unit. range seems good to me; i've never really tested how far it will reach, but for my purposes it works great. i didn't mount the antenna as suggested (verticall, along the A-pillar). i mounted it horizontally inside the dash, behind the instrument cluster near the cowl. still seems to work great...

david, i received the AU-84TM sensor in the mail...thanks! that was very generous of you. i will make a $10 donation to the12v.com in appreciation of your thoughtful gesture! i just wanted to ask, there is no wiring diagram but i noticed that the 4-pin harness plugs directly into my crimestopper pager main module. just to be on the safe side, i'd like to verify the color codes. i'm assuming red and black are +12V and ground, respectively (if so, then these match up with crimestopper's pins). green i assume is neg. trigger for zone 1, and blue is neg. trigger for zone 2. are these assumptions correct? and does adjusting clockwise increase or decrease shock sensitivy? also, does the sensor need to be mounted on a specific axis orientation? i.e., vertically? or will it work secured in any position? thanks again, --anton