Sebson IR WAL F Mode D'emploi page 9

To ensure optimum sensitivity of the sensor, install the device in the room in such a way that the movements are
transversely to the device. Movements that are directly to and from the device are less well detected. (see Fig. 2a).
The following environments or surfaces are not suitable for mounting, as they may impair the detection of thermal
radiation (see Fig. 2b):

Metal surfaces e.g. metal door frames

In the immediate vicinity of electronic devices such as computers, monitors etc

Heat sources e.g. radiant heaters, radiators or lamps

In the vicinity of e.g. fume cupboards or fans

Within the radiation range of luminaires (minimum distance from luminaires >50cm)
Function of the motion sensor:
The sensor integrated in this device detects heat radiation from moving bodies, e.g. people or animals, and
transmits this as an electrical impulse to a connected light, for example. This device then switches itself on. The
detection of heat radiation can be limited by large furniture, glass panes or very high ambient temperatures of over
40°C, for example in summer.
Disabling and activating the motion detector:
ON: Sensor deactivated-Connected device is switched on
OFF: Sensor deactivated- Connected device is switched off
PIR: Motion detector is activated after 30 seconds (warm-up phase)
Detection area (Fig 3):
The detection range of the motion detector is approx. 10m and 190° (free area) at a mounting height of 1-1,8m on
the wall. In closed rooms the detection distance can be lower, according to room layout.
Connection of the protective conductor (PE):
Sensitivity when switching (with regard to the ambient brightness):
Time setting (switching off delay):
If a lamp with protective earth contact is connected and a junction box is
not installed, the protective earth must be bridged from the supply line to
the lamp by means of an additional terminal in the housing of the motion
detector.
This setting control can be used to regulate the switch-on sensitivity of this unit
depending on the ambient brightness (between 3 and 2.000 LUX).
The duration of the operating time can be set continuously from approx. 10s to
30min. The timer is restarted if a movement from the sensor is detected before the
set time has elapsed.
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