ECOVACS rates the T90's climb at 0.9 in (24 mm), a bit under an inch. The robot Vacuum Wars bought got itself up 1.3 in (32 mm). I spent years reading supplier spec sheets. A maker that underquotes its own part is rare enough to notice.
The rest of the box holds up too. The roller is rinsed with fresh water as it mops. Against dried-on coffee and grape juice it earned 157 points from Vacuum Wars, whose average in that review sits at 108. It also left the floor drier than most. Pet hair pressed into carpet came up completely, and long hair didn't wrap. Homes with cats and dogs that have lived with it describe the same thing: the hair goes in the bag and the roller stays fresh.
It carries a camera and a microphone. The US manual shows how to turn the Wi-Fi off: hold the dock's button for 30 seconds. The buttons still run a basic clean if you decline the app's privacy policy. That's more candor than most camera robots offer.
The catch is carpet. It pulled 81% of buried sand from medium pile, a hair above average. Just A Dad Approved called its carpet cleaning "just okay" after a couple of months at home. One owner, in a video ECOVACS sponsored, found it jams on a thick rug. On thin rugs between hard floors, that won't matter. In a carpeted living room, it will.
Buy it for a home that's mostly bare floor, where the pet's shedding is the everyday kind. Our full T90 Pro Omni review has the rest.