iRobot Roomba 500 Series Owner's Manual page 14

Virtual Wall Lighthouses
Lighthouse Mode
In Lighthouse mode, the Virtual Wall Lighthouse helps Roomba navigate
around your home and allows Roomba to clean room-to-room.
Place lighthouses in the doorway between two rooms. Roomba will clean the
room it starts in, navigate to the next room, and then clean the second room.
When Roomba has completed cleaning, it will use the lighthouses to navigate
back to the home base.
Place lighthouses
Home
Base
Start
Roomba
here
With two Virtual Wall
Lighthouses in lighthouse
mode, Roomba will clean
Room 1 for approximately
35 minutes, then clean
Rooms 2 and 3 for 35
minutes each, and then
return to the Home Base.
1
iRobot Roomba 500 Series
in the center of
the door frame
Room 1
™
(models 535 and above)
Lighthouse
Room 2
Room 3
Lighthouse