Mounting And Start-Up; General Notes On Mounting - HomeMatic HM-Sec-MDIR-2 Bedienungsanleitung

6 Mounting and start-up

6.1 General notes on mounting

The front detection lens of the motion detector operates on 4 detection
levels, with 9 upper, 8 middle, 5 lower and 2 creep zone segments. This
means that, with an aperture angle of 90°, a range of up to 12 m can be
achieved. The figure below shows the detection range of the main lens:
To provide an even greater level of security, the motion detector features
"creep zone protection", which ensures that an intruder cannot circum-
vent the detection range of the main lens by literally staying under the
radar. An additional lens with a detection range that points straight down
is integrated in the detector for this purpose. This mini dome lens has
17 segments that cover an area of approximately 3.75 m x 3.75 m at a
height of 2 m. Its principal detection range can be seen in the figure on
the next page.
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• Keep pets away from the protected area as far as possible to
prevent them from triggering a false alarm.
• If you cannot do this, try to align the detection area accordingly by
adjusting the height of the device.
• If necessary, cover the lens for creep zone protection. Please bear
in mind that pets can also jump up onto cupboards, for example,
which may bring them into the detection range.
• Select an appropriate mounting location at a typical height of 2 m.
• To reduce the risk of a false alarm being triggered, the PIR detector
must not be exposed to direct sunlight, car headlights, etc. nor
must it be mounted in the vicinity of a heat source (above a heating
appliance, for example). The detection ranges must be aligned
against a wall or the floor, but not directly on a window, heater or
other heat source.
• The effectiveness of the detection procedure depends on the
temperature difference between the moving object and the relevant
background.
• It is not possible to detect motion through glass.
• When mounting the wireless motion detector, please ensure that
Detection ranges of the
bottom lens used for
creep zone protection
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