Samsung VL350 Full Manual page 23

2
Select Stereo in SmartThings app.
Select from the Touch at the top Touch "Stereo"
device list
right
1
2
Touch "Select Select the second
Speaker" device and touch
"DONE"
 VL550 / VL551 is already a Stereo device so does not support Stereo Multiple connection, only for Audio
Group function.
ENG - 18