Sennheiser Set 860 Instruction Manual page 33

Option B (proximity pairing)
Place the stethoset receiver as close as possible to the
1
transmitter.
Switch the stethoset receiver on by pulling the ear bows
2
apart.
3 Simultaneously press and hold the volume buttons +/–.
Once pairing is completed, the
the transmitter flashes white. Release the buttons.
1 2
Using additional functions
Transmitter status
3
ON
LED on
Set 860 | 33