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Title: Minimally effective and dies
Review: Bought a remanufactured Roomba Scheduler 4290 at the end of Dec. It constantly gets hung up on throw rugs and stuck under furniture. Today the charging system decided to give up the ghost. Called tech support and they are sending a "new" unit. Good tech support resonse but the unit itself works poorly. In contrast our 535 works great (and is the reason we got the second unit). However, I wouldn't recommend a 4290 to anyone I liked.
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