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- Newsgroups: rec.audio.car
- Path: sparky!uunet!cs.utexas.edu!usc!rpi!scott.skidmore.edu!jreiser
- From: jreiser@scott.skidmore.edu (Jason Reiser... Asleep)
- Subject: Re: CAR ALARMS!
- Message-ID: <1992Nov21.113301.20562@scott.skidmore.edu>
- Organization: Skidmore College, Saratoga Springs NY
- References: <By19KG.81F@acsu.buffalo.edu>
- Date: Sat, 21 Nov 1992 11:33:01 GMT
- Lines: 83
-
- v523d85n@ubvmsb.cc.buffalo.edu (Robert C Maggio) writes:
- >
- > a quick question and answer and info session:
- >
- > since we are on the topic, exactly how should one set the alarm sensitivity?
- > mr Runkle just said that slapping the bumper wasnt a good enough test.
- > i know that my car has to be smacked pretty hard in order to set off the alarm.
- >
- > oh yeah, hey, mr Runkle, did you test that glass breakage sensor by shattering
- > one of your back windows? just kidding. i do wonder how all these people
- > set their shock sensor sensitivities though. i used the smack the bumper method
- > and i mean a good smack. i also parked it by an air force runway with jets
- > flying with full afterburners and in a place where trucks go by(in a small town
- > while i was on vacation-a safe place)
-
- Testing shock sensors can be done in a number of ways. I wouldn't
- highly recommend slapping or otherwise abusing the body panels as
- damage may result. Instead, the best methods I've found are to hit
- the center of the windshield with either the ball of the hand (where
- hand meets wrist) or with a closed fist. Other useful methods are
- kicking the tires with the ball of the foot (NOT the toe... that's
- painful). And of course, one could result to such real world testing
- as suggested above (aircraft, Harleys, trucks, etc.)
-
- Testing glass breakage sensors is easy IMHO. Simply adjust the sensor
- until it is just barely able to sense the following... Go around the
- car and wrap on the glass with an automobile key. (Of course, other
- keys will do, but I'd suggest a fairly smooth one, so as not to
- scratch anything or cut yourself in the process.) You will basically
- stab at the glass with the key and turn the sensor to it's least
- sensitive triggered response. Here to you could try the real world
- testing... Harley's will sometimes vibrate the car just enough to set
- these off, even if it seems properly adjusted... and a slightly
- insensitive one is OK... a thief will hit the window much harder to
- break it, and will shatter the glass... leading to a noisier and more
- easily detected break in.
-
- > my personal suggestions:
- >
- > two shock sensors, one sensor for both front and back is NOT enough. no
- > sensor can cover the whole car alone
-
- I strongly disagree with this statement. If one sensor will not cover
- the entire vehicle properly, and with very similar sensitivities... it
- is either poorly installed or of inferior quality. Note that some
- vehicles may present an exception to this... such as overly large
- ones.
-
- > set them independently, i.e. smack both bumpers soundly until the alarm no
- > longer triggers.
-
- This holds true for any group of sensors... always disconnect the
- other sensors when working on setting another. Otherwise, you may
- have more than one triggering from your attack on the vehicle.
-
- > a glass breakage sensor is another must
-
- I don't know that it is a must. These are great to stop breakins that
- may foil a shock sensor (such as bending a window until it breaks...
- though I've never actually seen it done and still think it may trip
- the shock sensor.) Such devices are more useful in fair weather
- states. In the north east where hail, sleet, snow, cold, etc. are the
- norm in the winter, I will often turn my glass breakage sensor off.
- Hail is the sensor's worst enemy, and ice on the window can be almost
- as bad (compression and relaxation of the glass... or cracking ice)
-
-
- I think that all the recent talk on the subject of alarms... from all
- different standpoints really proves the necessity of an alarm group.
- There is so much to discuss... so lets get to it already.
-
- Looking forward to an official rec.autos.security call for votes,
-
- - Jason
-
-
-
-
- --
- ---------------------------------------------------------------
- \ Jason A. Reiser \ Send E-Mail to jreiser@scott.skidmore.edu \
- \ Skidmore College \ Saratoga Springs, NY 12866 \ 518-581-6580 \
- \ It's a new Ice Age! Hooray!! Sled City! - Calvin & Hobbes \
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