work by "listening" for the sound of breaking glass in a window.
"Shock" glassbreak detectors are mounted on the window and "feel"
the shock of breaking glass. This kind of advanced wireless
technology can provide shatter and shock protection for your windows,
for often intruders are "sensed" and an alarm sounded while they are
still outdoors. This is often enough to send a burglar running!
ASC-SS1 Glassbreak Shock Sensor
- Protects all glass types: plate, tempered, laminated and wired
- Outstanding false alarm immunity
- Epoxy sealed against moisture and corrosion
The ASC-SS1 shock sensor protects all types of glass: plate, wired,
tempered, and laminated. The sensor will protect the glass within an
8 feet radius from the sensor for glass up to 1/4 inch thick. The ASC-
SS1 mounts directly to the glass surface and is wired to a two wire
powered protective loop.
The ASC-SS1 shock sensor is a two wire electronic device which
draws minimal current (< 1mA) from the protective loop. When glass
is broken, the sensor provides a normally-closed solid-state output
(circuit opens on alarm) which is not polarity sensitive. The sensor
employs transient suppression devices to protect against lightning.
The ASC-SS1 shock sensor does not require a processor.
The ASC-SS1 shock sensor may be wired in series with multiple
sensors. Care should be taken to ensure that the total resistance of
the sensors in series does not exceed the capabilities of the alarm
furthest from the sensor (see diagram) using a blunt plastic or hard
rubber object. This impact should create enough energy for the
sensor to generate an alarm condition. Actually breaking the glass
would create more energy than the test, so if the test impact causes
the sensor to generate an alarm, protection is assured.
If the unit is tested in the alarm circuit, tripping the detector should
trip the alarm panel. An alternate test method is to connect the
sensor to an ohm meter and watch the resistance (less than 20
(omega) when not in alarm) increase to greater than 1M(omega) for
at least 1 second during an alarm condition.
The ASC-SS1 shock sensor must be mounted in a corner of the
glass. For best performance, do not mount the sensor closer than 1"
from the window frame.
Shock sensors mount with double coated acrylic foam tape designed
to resist the types of environmental stresses the shock sensor will
experience after installation.
Vanguard Security Corporation
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