TFA Dostmann MAXIM II Manual De Instrucciones página 38

2. Use OUT key to view the MIN/MAX temperature and humidity data
for the selected transmitter.
Note: the MIN/MAX data for each transmitter needs to be reset
separately.
ABOUT THE OUTDOOR TRANSMITTER
The range of the thermo-hygro transmitter may be affected by the
temperature. At cold temperatures the transmitting distance may be
decreased. Please bear this in mind when positioning the transmitters.
Also the batteries may be reduced in power for the thermo-hygro
transmitter.
868MHz RECEPTION CHECK
If the outdoor temperature and humidity data are not being received
within three minutes after setting up (or outdoor display always show "- -.
-" in the outdoor section of the Weather station during normal operation),
please check the following points:
1. The distance of the thermo-hygro-station or transmitters should be
at least 2 meters away from any interfering sources such as
computer monitors or TV sets.
2. Avoid placing the transmitters onto or in the immediate proximity of
metal window frames.
3. Using other electrical products such as headphones or speakers
operating on the 868MHz-signal frequency may prevent correct
signal transmission or reception.
4. Neighbors using electrical devices operating on the 868MHz-signal
frequency can also cause interference.
Note:
When the 868MHz signal is received correctly, do not re-open the battery
cover of either the transmitter or thermo-hygro-station, as the batteries
may spring free from the contacts and force a false reset. Should this
happen accidentally then reset all units (see Setting up above) otherwise
transmission problems may occur.
The transmission range is about 100 m from the transmitter to the
thermo-hygro-station (in open space). However, this depends on the
surrounding environment and interference levels. If no reception is
possible despite the observation of these factors, all system units have to
be reset (see Setting up).
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