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18
3.8.4. Dual Edge Sensing (DES) technology 'explained'
Figure 9 – side view, detection pattern in optimal temperature environment
This detector has Dual
Edge
Sensing
(DES)
Technology,
developed
to eliminate false alarms
yet
still
provide
maximum security.
The
detector
uses
a
pattern of infrared beam
zones to sense body
movement. The detection
pattern in an optimal
temperature environment
is shown in figure 9 and
figure 10.
Each time you walk into
or out of an infrared
beam zone this will be
sensed and processed by
the DES technology built
into the detector. The red
trigger light will not turn
on until the detector has
made a valid movement
detection
in
normal
mode. This will only
happen if the detector is
not in Intelligent Power
Saving (IPS) mode.
Remember that the green
light does not operate in
Figure 10 – detection pattern in the
normal mode.
optimal temperature environment
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