Dual Mode Virtual Wall Barriers - iRobot Roomba 900 Owner's Manual

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Dual Mode Virtual Wall Barriers

The Dual Mode Virtual Wall barrier (an optional
accessory) keeps Roomba in the places you want
to be cleaned — and out of the ones you don't.
You can set your device to one of two modes to fit
your home's cleaning needs:
18 Roomba 900 Series Owner's Guide
®
Virtual Wall Mode: When the switch is in the
"up" position ( ), the device functions as a
Virtual Wall. This means that you can set it to
block openings of up to 10 feet (3 meters).
It creates an invisible, cone-shaped barrier
that only Roomba can see.
Note:
This barrier gets wider as it gets further
from the device (refer to illustration).
Halo Mode: When the switch is in the "down"
position ( ), the device creates a protective
zone that Roomba will not enter. This prevents
Roomba from bumping into items you want to
protect (e.g. a dog bowl or vase) or crossing into
undesired areas (e.g. a corner or under a desk).
The Halo is invisible and reaches approximately
24 inches (60 centimeters) from the center of
the device.