Sennheiser RS 160 Instruction Manual page 20

Switching the transmitter off
Press the multi-function button
The multi-function LED
To disconnect the transmitter from the mains:
Pull out the mains plug from the wall socket.
If the headphones are outside the transmission range or switched
off for more than 5 minutes, the transmitter automatically switches
to standby mode. The multi-function LED
mode, the transmitter's power consumption is very low so that it
can remain connected to the mains.
Using the RS 160
for approx. 1 second.
goes off. The transmitter is in standby mode.
goes off. In standby
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