Specifications

90
Reception then no
reception - loss of
transmission signal
from the sensor to the
base station
Press and hold the PLUS(+) key for 2
seconds to synchronize the base
station to the sensors for weather data
reception. If still no signal, then
change the sensor batteries and syn-
chronize the units again.
Poor contrast LCD or
no reception or low
batteries in sensors or
receiver.
Check the LCD contrast setting or
change batteries (check low battery
indicator on the LCD)
Quite frequently interferences are only of a temporary nature and
may be easily overcome. If there are wireless headsets, remote
babysitters or other devices working on 433MHz in your house or in
the vicinity, their switch-on time is mostly limited. Furthermore most
of these devices allow the change to an interference-free frequen-
cy. Such measures will effectively overcome interferences.
20. Transmission Range
The transmission distance from the thermo-hygro sensor to the
base station in open space under optimum conditions is 100 me-
ters. Although the signal transmission may travel though solid
surfaces or objects, the following points should be avoided if possi-
ble:
- High frequency interferences of any kind.
- Constructions of any kind or trees.
- The distance of transmitter and receiver to conducting planes
or object (including the human body or the ground) does influ-
ence the transmission characteristics and thus the transmis-
sion distance.
- Broadband interferences in municipal areas can reach levels
reducing the signal/noise ratio over the entire frequency band,
thus also reducing the transmission distance.