ECOVACS ROBOTICS DEEBOT OZMO 960 Manuel D'instructions page 20

3. Operating and Programming
3.5 Choosing a Suction Option
Main Brush Option: The best choice for deep cleaning, with a
combination of the Main Brush and strong suction.
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Direct Suction Option: The best choice for daily cleaning. This
Suction Option is specifically designed to pick up hair without getting
clogged by it, and is ideal for pet owners.