Instructions are vague but understandable. The vacuum cleaner has more modes that are not available via the remote control. I like that it's not random. It moves back and forth in a north-south direction and then in an east-west direction, getting full coverage everywhere. We have thick anti-fatigue mats in front of the sink and stove (like cashiers stand on them) and it usually bounces on them. Carpets twisted from rags are not suitable in the hallway. Eats them, gets stuck, squeaks and goes off. The stair nosing is not a problem. Once it got stuck under the cross of a chair (beeped and turned off). Vacuumed with our Riccard 3 days before receipt, was amazed at what it absorbed. My complaint: Once charged, it beeps like a dead battery in a smoke detector. You have to physically press the power button or put it in standby mode. The first morning at 5am and the second morning at 2am it was not normal. Unfortunately the manual doesn't show how to change it so I'm posting it back. The last page of the manual contains contact information for customer service, but all lines are blank. Edit: A family member has the same vacuum. Moved my 2 stars to 4 stars. Beep when fully charged. So you have to leave it on right before you get up or at work to keep the battery charged and not beeping at night.
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