Sennheiser RS 120-W Instruction Manual page 17

Using the headphone system
You can switch off the headphones in two ways:
▷
Place the headphones on the transmitter's headphone holder.
The headphones switch off automatically and the charging pro-
cess starts (> 14).
A
▷
Set the ON/OFF switch of the headphones to OFF.
The headphones switch off.
B
Information on the wireless connection
The TR 120-W transmitter uses Bluetooth LE Audio wireless technol-
ogy for audio transmission. It is only compatible with the HDR 120-W
headphones. A Bluetooth connection with e.g. your smartphone is
not possible.
The transmitter transmits the audio signal and all headphones con-
nected to it receive the signal. Audio Broadcast allows any number
of headphones to be connected to the transmitter simultaneously.
The only limitation is the wireless range of the transmitter.
OFF
OFF
RS 120-W | 17