2
device", the lighting must always be switched on manually.
The lighting is always switched off automatically.
Pulse function
Time delay can be set to pulse for controlling existing stair-
case light timer switches. To do so, the light output produces
a pulse of 0.5 s in duration every 10 s if people are present or
it is dark.
5. Detection area
The circular detection area of theRonda S presence detector
covers an average detection area. Note that seated persons
are detected in differently-sized areas. The recommended
installation height is 2 m–4 m. As installation height incre-
ases, the sensitivity of the presence detector decreases. The
extent and distance between the active and passive zones of
the presence detector also increases. The detection range is
reduced as the temperature increases.
Seated persons:
The presence detector reacts very sensitively to the slightest
movements. The details refer to smallest movements at table
height (approx. 0.80 m). The detection sensitivity is reduced
from an installation height of > 3 m. More pronounced move-
ments are required for clear detection.
Installation
height (A)
Across (t)
Frontal (r)
Seated (s)
2.0 m
Ø 7.0 m (38 m
2
)
Ø 2.5 m (5 m
2
)
Ø 2.5 m (5 m
2
)
2.5 m
Ø 7.0 m (38 m
2
)
Ø 3.0 m (7 m
2
)
Ø 3.0 m (7 m
2
)
3.0 m
Ø 8.0 m (50 m
2
)
Ø 4.0 m (13 m
2
)
Ø 4.0 m (13 m
2
)
3.5 m
Ø 8.0 m (50 m
2
)
Ø 4.0 m (13 m
2
)
–
4.0 m
Ø 9.0 m (64 m
2
)
Ø 4.0 m (13 m
2
)
–
All fi gures are guidance values.
Brightness measurement
The presence detector measures artifi cial light and daylight
that is refl ected below the detector. The light measurement
area maps a rectangle of about 1.8 x 3 m at table height. The
installation location is the reference point for the lighting
level. Direct light infl uences the light measurement.
Avoid placing fl oor lamps or suspended lighting directly below
the detector.
If the brightness measurement is deactivated, channel A light
only switches depending on the presence (brightness setpoint
set to "measurement off" via the remote control).
1,8 m
inside
window
Suitable lamps
The presence detector is designed for the operation of fl uore-
scent, compact fl uorescent, halogen and incandescent lamps
as well as LEDs. The maximum number of switchable lights is
restricted due to the high inrush current levels of the EBs and
LED drivers. The use of an external contactor helps with large
loads.
6. Installation
Flush-mounted fi tting
The presence detector is fl ush-mounted using a size 1 stan-
dard fl ush-mounting installation socket.
Ceiling installation
A ceiling installation unit 73 A is available for simplifi ed
ceiling installation of the presence detector (see accessories).
This also ensures cord grip and contact protection. The instal-
lation diameter is 72 mm (drill diameter 73 mm).
