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4.6 Power supply / recharge
The devices are equipped with a rechargeable
lithium-ion battery of 3,7 V / 1100 mAh.
To charge the batteries, plug the USB charging
cable into the USB jack of the respective device
and connect it to a regular USB port (computer,
laptop, USB power supply).
The red charging status LED is lit during rechar-
ge. The LED switches off when the battery is fully
loaded.
4.7 Group number selection
In the rare case of interference, changing the
group number can help. The following adjust-
ment has to be made on both the transmitter and
the receiver:
Switch the device off. Then press and hold both
the »
« and »
« buttons while switching the
device on.
The symbol „GRP« in the display will blink. Select
a group number of your choice between 00 and
39 by pressing the »
« and »
« buttons. After
the selection, wait for 5 seconds to set the chosen
group number. The »GRP«-symbol will stop blin-
king and the selected group number is displayed.
Please note:
There should only be one active transmitter within
a group! Additional activated transmitters with
the same group number will cause interference in
the sound quality. Transmitter and receiver must
be set to the same group number!
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