Bosch Professional Series, Reference Manual, Page: 7 / 32

Professional Series TriTech AM Motion Detectors
with Anti-mask, LSN
Installation considerations | en 7
Bosch Building Technologies Reference Manual 2018.10 | 01 | F.01U.352.414
4 Installation considerations
When installing the detector, observe the following installation considerations.
Notice!
Bracket use
Using a mounting bracket might reduce catch performance, range, as well as increase false
alarms. Reduced catch performance might invalidate regulatory certification on the
installation. The use of mounting brackets has not been evaluated by regulatory agencies.
Microwave Doppler radar energy passes through glass and most common non-metallic walls.
The PIR detector reacts to objects rapidly changing temperature within its field-of-view.
Detectors using passive infrared (PIR) technology recognize that all objects give off (emit)
infrared energy. The warmer an object is, the greater the amount of infrared energy is emitted.
The PIR receiver technology is designed to detect the change in infrared energy caused when
a target of a different temperature from a stable background passes through its field of view
(coverage pattern).
Point the detector away from:
Glass exposed to the outdoors.
Objects that might change temperature rapidly such as heat sources, air
conditioning outlets, or surfaces heated by sunlight.
Objects that small animals such as birds and mice might climb on (stairs,
shelves, ledges, furniture) and appear in the upper zones of the PIR which
are more sensitive. Small animals in close proximity to the detector,
within the field of view might, also cause false alarms.
Do not install:
In a location where direct sunlight shines onto the detector.
Outdoors.
Near rotating machines or other moving objects within the field of view.