GIRA
Info
Radio-Control Presence Detector
Installation Instructions
Radio-Control Presence Detector
7/07
Page 2 of 15
2. Fitting and start-up
Place of fitting
The presence detector is fitted under the room ceiling
and monitors the working surface below (fig. 2.a).
Fig. 2.b: the actual brightness measured at the detec-
tor
d
is composed of reflected artificial light
c
and
daylight
e
and depends on the reflection properties of
the working surface
f
.
2.a)
2.b)
Avoid direct sunlight into the sensor window. The sen-
sors might otherwise be irreparably damaged.
If needed, the detection field can be confined by
means of the mask supplied with the device (cf. sec-
tion 3).
Install the presence detector free from vibrations and
not in the immediate vicinity of heat sources (e.g.
lamps, radiators), fans or ventilation ducts. Lamps
cooling down after operation or draughts (e.g. caused
by open windows) might be detected and lead to un-
desired switching.
Fitting
Attach the presence detector to the baseplate only af-
ter having installed the batteries and programmed the
presence detector into a radio-control receiver.
To install the presence detector proceed as follows:
1. Fasten the baseplate to the room ceiling using the
screws supplied (fig. 2.c
c
).
2. Turn the presence detector on the baseplate ap-
prox. 45° counterclockwise until it is heard to en-
gage.
2.c)
i
Important note:
Please note that the number of radio presence detectors to be used inside a radio-control zone (zone in which
radio telegrams can be exchanged between subscribers) is limited. As all these devices react in the same way
to the same ambient conditions as, for instance, a sudden rise of the outside brightness level, and as they will
then begin transmitting telegrams, the probability of the telegrams interfering with one another and thus caus-
ing malfunctions is considerably increased.
Depending on ambient conditions, a number of more than 8 radio-control presence detectors may already be
sufficient to cause malfunctions.
Safety instructions
Attention: Electrical equipment must be installed and fitted by qualified electricians only.
