The Singing Machine ISM2040 Instruction Manual page 10

Connections
Lights Mode
u
Connecting to AUX IN Jack
Cradle
There are 5 built-in light mode. Repeatly press
/ button to switch between lighting
effects.
Connect an external device by using an
appropriate cable (3.5mm audio cable not
included) as shown.
NOTE:
See page E13 to select and use the Aux In
function.
u
PULL
— E9 —