I've tried to find an online manual for the VIP RS3200 system, but haven't had any luck. I have one out in my car, but I'm at work right now...
EDIT: Found one! http://rav4world.com/brochure/alarms/rs3200/rs3200.html
According to some guy who posted in the alt.autos.toyota group:
"The glassbreak sensor is usually a microphone that it mounted in the luggage area. The interior sensors aren't powerful enough to reach the back of big vehicles (this post was regarding a 4Runner)
, so this is a backup sensor. Tapping front drivers window is probably out of range. The tap really needs to be quite hard - I don't advise testing this - it gives me the shakes every time I do it. Remember it is tuned to detect BREAKING glass, so this is the only real test."
From the manual:
GLASS BREAKAGE SENSOR: The RS3200 utilizes a microphone (usually mounted in the STATUS MONITOR) to sense the noise from tapping on window glass, or glass breaking, and TRIGGER an alarm. It is fine tuned to "listen" for this type of noise and ignore other sounds.
WARN AWAY ALARM:
When the GLASS BREAKAGE SENSOR'S microphone picks up tapping or breaking of window glass, it TRIGGERS a WARN AWAY ALARM; the headlights and tail and marker lights flash, and the horn sounds for 20 seconds, but the starter is not disabled. If there is another detection of glass tapping or breaking, or if a door is opened or unlocked without a key, the regular ALARM is TRIGGERED.
Now if only there where some way to adjust the sensitivity, since no one seems to be able to get it to detect deliberate tapping on the glass...
...and according to page 14, there should be, but they don't describe how to do it.
"When the RS3200 was installed in your vehicle, care was taken to adjust the sensivity level of the GLASS BREAKAGE SENSOR. You may observe how it works following the procedure listed below.
1. Arm the system
2. Wait until the STATUS MONITOR'S LED starts flashing.
3. With the tip of a key, tap the center of the driver's door window. Tap the glass with light to moderate force.
WARNING: Do not hit the glass with excessive force, especially in cold weather, or you may crack or break it.
A WARN AWAY ALARM should be TRIGGERED. If the ALARM is not TRIGGERED, make sure you performed the procedure correctly and try again. If you find that the system did not perform as expected, contact your Toyota dealer for more information."
Hey, whaddayaknow... you look hard enough for something, it's amazing what you can find...
This is from a Tundra, so it may be a little different on the Celica."TURN TO THE RIGHT FOR MORE SENSITIVITY"http://www.customtacos.com/tech/index.php?page=index_v2&id=12&c=6
is informative too; it appears that the alarm system is included even on systems that supposedly just have keyless entry, the alarm is just disabled.