TCL ALTO 9+ Guide De Démarrage Rapide page 5

2a
Overview
Sound Bar main unit
Remove the back cover of your
Sound Bar
Power button:
Press to turn on or enter
SLEEP mode. Long press
to turn off (Standby)
LED display:
Green/red LED:
Indicates the Sound Bar Indicates Wi-Fi connection
status (e.g. volume level, (e.g. Green: connected.
sound source mode, etc). Red: disconnected).
Source button:
Press to switch the audio source
among HDMI IN/HDMI ARC/
AUX/BT/Optical/USB modes.
Bluetooth button:
Press to select the Bluetooth source.
Press and hold to enter pairing mode.
Volume buttons:
Press to increase
or decrease the
volume level.