Bosch ISN-SM-30 Application Manual page 25

Figure 4-15: GMAS6 movable mounting kit
The GMAS-6 consists of 3 component parts:
(A) Detector rest plate
(B) Door plate
(C) Detector plate
The seismic detector is mounted on the detector plate to enable the combination to be easily
moved between the detector rest plate and the door plate. The detector rest plate and the door
plate are designed to securely accommodate the detector. The detector can easily be relocated
from one location to the other by sliding the detector upwards to free it from the current plate.
The GMAS6 movable mounting kit must always be mounted on the opening side of the
door and not the hinged side.
Figure 4-16: GMAS6 installed
Figure 4-16 (A) shows the system disarmed while access to the protected area is required. The
detector plate is located on the rest plate to the opening side of the door.
Figure 4-16 (B) shows the system armed with the detector and detector plate mounted on the door
plate. If the detector is moved from the door plate, then the two contacts (micro-switch and reed)
that are located inside the detector plate open and signal an alarm condition.
When the system is armed, the seismic detector also detects unauthorized opening, thermal at-
tacks, and mechanical attacks.
As the cable for the detector is exposed and will be subject to constant movement, then a form of
mechanical cable protection should be considered.
Bosch Security Systems Seismic Detectors Application Guide
Installation - Accessories
A
B
C
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I-200153-1
04.2016