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NOTE
NOTE
1. Do not attempt to open or repair the unit without qualified electrician while it
is malfunctioned.
2. The following conditions may cause lower sensitivity:
• In very foggy days, the sensitivity may be less due to moisture collecting on the lens.
• In very hot days, the sensitivity may be less since high ambient temperature is close to
body temperature.
• In very cold days when heavy clothing is dressed, especially the facial area is covered,
very little heat will be emitted from the body causing the unit to be less sensitivity.
• Cleaning: Wipe with dry cloth only. Soap or rough cloth may damage the detector lens.
99 190 29 has 3pcs lens shields.
Usage of lens shield
Fig. 20-A
Fig. 20-B
This motion detector can use lens shields for masking the undesired detection area. Each lens
shield has 2 layers (layer A / layer B), each layer includes 13 small segments and each small
segment can cover 8.5 detection angle.
For example to install the detector at the height of 2.5 m, the detection range is a diameter of
approx. 10 m (look down lens) if the complete lens shields have been used, and up to 14 m
diameter if only the layer A of lens shield has been used, and up to 32 m diameter if no lens
shield has been used. (See Fig. 20-A & Fig. 20-B)
• The shadow part of the lens shields in the Fig. 20-A & Fig. 20-B are referring to the cutoff parts.
• The microwave sensor is unaffected by the lens shield.
Φ
10
m
A
B
2.5 m
2.5 m
Φ
14 m
4x8.5
o
4x8.5
o
Φ
14 m
Φ
32 m
Φ
10 m
Φ
14 m
Φ
10 m
2.5 m
2.5 m
The whole lens shield is used.
Part of the lens shield is used.
Part of the lens shield is used.
Layer A of the lens shield is used.
Содержание 99 190 29
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