New York's legion of window washers have long fascinated city dwellers below with their fearlessness. But the future of the profession might belong to those even more impervious to dangerous heights: robots.

Clearing a path to the market soon will be the Winbot 7, a compact machine billed by manufacturer Ecovacs Robotics as the first full-service window-washing robot. The device, which resembles a Roomba vacuum cleaner, attaches itself to the pane, maps out its perimeter and proceeds to clean the surface, playing a tinny tune when the work is completed.

Nick Savadian, executive general manager of the company's U.S. arm, said the robot is aimed at busy homeowners looking for a labor-saving escape from boring chores. "One thing we're short of in life is time," he said.

Mr. Savadian allowed that his company's small robots could have potential applications some day on gleaming skyscrapers, where window work carries risks. "Winbot is very proud to put itself in that position," he said. "It will clean the outside without taking any chances of liability."