Robot Vacuum Maker Roborock Shows Off Stair-Climbing Model With Legs

Roborock, a Chinese robotic vacuum cleaner brand, unveiled a concept device with two legs that can climb stairs in people’s homes, a flashy example of efforts to sell ordinary consumers on the idea of home robots.

The device, called the Saros Rover, is one of many robots on display at CES, the annual technology conference opening in Las Vegas on Tuesday. It’s the first robot vacuum cleaner with two wheel-legs, according to the company, which is formally known as Beijing Roborock Technology Co. Those legs can be raised and lowered independently of each other, the firm said in a statement Tuesday, allowing it to climb steps and navigate other uneven surfaces while making sudden stops and small turns along the way.