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• Transmitter (A)
1. Open the battery compartment (A5) by simply sliding the battery compartment lid as indicated by the arrow.
2. Insert the 3 AA battery packs (or batteries) in the battery compartment in accordance with the markings. Then close the battery
compartment.
3. Then proceed as described above (Putting into operation with an AC adapter, points 3 to 5, Transmitter).
• Receiver (B)
1. Open the battery compartment (B7) by simply sliding the battery compartment lid as indicated by the arrow.
2. Insert the 3 AA batteries in the battery compartment in accordance with the markings. Then close the battery compartment.
3. Then proceed as described above (Putting into operation with an AC adapter, points 2 to 4, Receiver). If the red lamp on the
transmitter and/or receiver goes out, functionality is no longer guaranteed. In this case, the battery packs must be charged or
the batteries replaced.
• Consider the environment
Batteries and battery packs should not be thrown away with domestic rubbish. As a consumer you are legally obliged to return
used batteries/battery packs. You can hand them in at your nearest collection point or wherever batteries/battery packs of the kind
concerned are sold. We also take back batteries/battery packs free of charge.
If you wish to return your old batteries to us, please send them marked „Used!“ to the following address:
Vivanco GmbH, Ewige Weide 17, 22926 Ahrensburg, Germany
You will find these abbreviations on batteries/battery packs containing harmful substances:
Pb Battery contains lead
Cd Battery contains cadmium
Hg Battery contains mercury
4. Range
In view of the physical diffusion characteristics of radio waves, you should determine the range of your Babyfon® in your
surroundings. In optimal conditions, the range is up to 300 metres. However, the actual range depends very much on local conditions
(e.g. location of the transmitter, type of building or atmospheric conditions). The range may also be reduced if you enclose the
receiver in your hands. For mobile use it is therefore recommended to use the belt clip.
However, you should be able to move around freely within the house/apartment with your Babyfon®. You can easily ascertain the
range in your surroundings by placing a radio in front of the Babyfon® transmitter. When you can hear the transmission, take the
receiver to the area where you require perfect functionality.
5. Channel selection
With your Babyfon® BM 400 the signal can be transmitted via two channels („A“ or „B“). If the sound reception is very poor, try the
other channel: switch both the channel selection switch (A4) on the transmitter and the channel selection switch (B6) on the receiver
to the other channel. Make sure that the channel selection switches on the transmitter and receiver are both in the same position.
Only then can transmission take place.
6. Sensitivity / volume
You can set the response sensitivity of the transmitter and the volume of the receiver of your Babyfon® BM 400: turn the sensitivity
control (A6) on the transmitter to the required microphone response sensitivity. The higher the sensitivity is set, the sooner the
transmitter starts to transmit when your baby makes a sound. You can also regulate the volume of the signals received using the
volume control (B5) of the receiver according to your surroundings.
