Jung BM 240 S1A WW Bedienungsanleitung Seite 21

Malfunction
Motion detector switches
ON when it should not
Maintenance/care
The motion sensor is suitable for
automatic switching of lights or
alarms. The unit is not suitable for
special burglary alarm systems, since
it lacks the sabotage protection pre-
scribed for this purpose. Weather can
affect operation of the sensor.
Cause
 Wind is moving trees
and bushes in the
detection zone
 Cars in the street
are detected
 Sudden temperature
changes due to
weather (wind, rain,
snow) or exhaust air
from fans or open
windows
 Position Wi-Fi device
very close to the
sensor
Strong gusts of wind, snow, rain and
hail can cause switching errors, since
the sudden temperature changes can-
not be distinguished from heat
sources. The detection lens
cleaned with a damp cloth (without
detergents) if dirty.
21
Remedy
 Adjust zone or apply
shrouds
 Adjust zone or apply
shrouds
 Adjust detection zone
or install in a different
place
 Increase distance
between Wi-Fi device
and sensor
can be