Yamaha YAS-108 Owner's Manual page 17

Operating range of the remote control
Operate the remote control within the range shown in the following
figure.
Remote control
sensor
NOTE
When the unit is mounted on a wall, point the remote control at the remote control
sensor on the top panel. For details, see the following:
▪ "Part names and functions of the front/top panel" (p.18)
▪ "Mounting the unit on a wall" (p.51)
Within 6 m (20 ft)
17
Replacing the battery in the remote
control
Press and hold the release tab firmly in the direction indicated by
[A], and slowly slide the battery holder out in the direction indicated
by [B].
Release tab
En
Battery holder
CR2025 Lithium battery