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Detection range
Visual sensor Infrared sensor
Can detect motion anywhere in the visible
i
mage.
R Y
ou can adjust the area detectable by the
visual sensor. For more information, refer
to the User’s Guide (page 26).
Can detect motion only in part of the visible
i
mage (shown here in grey)
R Y
ou can adjust the area detectable by the
infrared sensor. See “Adjusting the infrared
sensor range”, page 22.
R Detection does not occur when there are
obstacles in front of the infrared sensor.
Remove the obstacles or change the
installation location.
Main characteristics
Visual sensor Infrared sensor
Easily detects movement in the daytime or
w
hen it is bright.
R Movement may be incorrectly detected
when the moving object and the
background have a similar colour.
R Movement may be incorrectly detected
when there are sudden changes to the
overall brightness levels such as when
external lights are used.
Easily detects when there is a big difference
between the temperatures of objects and the
surrounding environment, such as in winter or
late at night.
R The sensor cannot easily detect when
there is no difference between the
temperatures of objects and the
surrounding environment, such as in
summer or during the daytime.
R If the camera is mounted facing a road, the
sensor may detect incorrectly due to
interference caused by the heat from
passing cars.
9
Installation Location
HNC600AZ_(en_en)_0325_ver.040.pdf 9 2015/03/25 14:34:18
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