Elecom M-IT11BR Series User Manual page 9

3) Put the battery cover back on.
4) Slide the power switch to the ON position.
The light around the wheel lights up red.
* When the battery level is running low, the LED light will blink slowly for a period of time.
Power-saving mode
When the trackball is left untouched for a fixed period of time while the power is ON, it
automatically shifts to power-saving mode.
Moving the trackball restores it from energy saving mode.
* For two to three seconds after restoring from energy saving mode, trackball operation
may be unstable.
Replacing the battery...
1) Remove the battery cover.