16
Propagation of radio waves
The radio coverage quality, and therefore the performance of the
doorphone, may be altered by obstacles located between the door
station and the interior handset unit:
walls, partitions, slabs, armoured doors or lift shaft comprising
metallic components.
(Furthermore, radio coverage may also be affected by electrical or
electromagnetic interference).
It is important to test the radio range on the installation site.
Plasterboard
and wood
Concrete and
building blocks
10% to 30%
reduction
50% to 70%
reduction
Brick
30% to 50%
reduction
Metal and metal
cladding
(e.g. armoured door)
70% to 90%
reduction
Battery specifications:
Battery
Type
Standby time
Charging
limited voltage
3.7V,1050mAh
Li-ion battery
72hour
4.2V
The above marked time is in the specific situation and
atmosphere
Use the authorized charger only
Do not disassemble the batteries
Do not short -circuit the batteries
Do not expose the batteries to extreme hear, fire or water
