Sennheiser Set 820 S Bedienungsanleitung Seite 30

Only use one of the two audio inputs on the transmitter (MIC or LINE).
Connect the power cable to the POWER socket on the transmitter. Plug
the power supply into a household electrical outlet.
Pull the power supply unit out of the electrical outlet when the unit will not
be used for extended periods of time.
Complete freedom of movement
It is not necessary that the transmitter and
receiver are in a direct line of sight, so you
can move around freely in the home or
outside in the garden. One transmitter can
be used to transmit to several receivers
on the same frequency. The transmitter's
range may decrease due to the surface/
composition of walls.
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