6
Functioning
OTT100H
2
FUNCTIONING
2-1
Detection range
ADJUSTMENT
Use the trimmer “MW” (table 3, Q) to adjust the microwave sensitivity (the
sensitivity is increased turning it clockwise).
Adjust the microwave sensibility in relationship to the needed detection range.
By using the knob (table 2, E) it is possible to move the PIR2 (lower) in order to
obtain different ranges from 3m to 18m.
The knob moves vertically the RIP along the marked positions on the holder (table
3, V). Each position corresponds to a distance:
These distances are reached when the detector is installed at about 120cm
(height).
If the object in motion is very large (for example a car) there is possibility that the
detector can detect its presence even if it's farther than 18 m.
2-2
Operating principles
The detector works on the combined action of two PIRs and a microwave sensors.
The figures below shows some of most relevant working examples.
Table 5: Top view
A
Zones that can not be
covered
B
Zones that can be
covered by electronic
holder rotation
170°
85°
B
A
B
A
Table 6: Side view
PIR2
position
Distance
A
3 m
B
5 m
C
8 m
D
16 m
E
18 m
1.2m
3m
5m
8m
16m
18m
E
A
