Kärcher RC 3 Bedienungsanleitung Seite 17

Caution:
Prior to using the cleaning robot, please make sure that
there are no obstacles, such as on steps or thresholds.
The cleaning robot emits an audible signal.
The signal light flashes for approx. 15 sec. and
then lights up constantly.
The cleaning robot is in standby.
The charging process starts when the signal
sounds.