Invacare Comet User Manual page 36

The electronic system must be switched off in order
to activate or deactivate an acoustic signal for
particular functions, and a particular keystroke
combination needs to be entered when switching on
again.
After a signal for a particular function has been
successfully activated/deactivated, a combination of
LEDs on the battery charge display will blink as a
confirmation. The LEDs are numbered as shown on
the right:
36