Conrad wh1070, Руководство по эксплуатации

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Problem Possible cause Error remedy
batteries are empty, proceed as
described in the chapter „Battery
Replacement“.
The base station has Remove the batteries from the
synchronised to base station and the temperature
similar radio sensor. /air humidity sensor, wait approx.
10 minutes Then proceed as
described in the chapter „Battery
Replacement“.
A set alarm The alarm function The alarm must be activated,
does not is not turned on. to function. For this purpose
trigger the ALARM button must be pressed
after setting the alarm value. A small
loudspeaker symbol appears. The
alarm is switched on. Read the
chapter „Alarm“ for this purpose.
20. Range and reception disturbances
If the device has difficulties with DCF reception or the reception of the tempera-
ture/air humidity sensor, please observe the following points.
• The radio transmission of the outdoor sensor to the basis station functions in the
868 MHz range which is also used by other devices, e.g. by a similar 868 MHz sta-
tion of your neighbour. This may restrict operation and the range.
• The range stated of up to 150 m is the free-field range, i.e. the range at sight con-
tact between the outdoor sensor and the base station. In practical operation, how-
ever, there are walls, the ceilings of rooms etc. between the transmitter and the
receiver which reduce the range correspondingly.
• Further causes for reduced range or reception disturbances are:
- High frequency disturbances of all types
- Buildings of all types and vegetation
- Conductive metals which are located in the proximity of the devices or within the
range of transmission, e.g. radiators, metal insulation glass windows, reinforced
concrete floors etc.
- strong rain or fog
• The influence of the radiation characteristic of aerials through the distance of the
temperature/air humidity sensor and the base station to the conductive areas or
objects (also to the human body or floor).
• The radiation of interference from other electrical devices, e.g. PC, mobile tele-
phones, radios, electric motors, etc.