The iRobot Roomba Discovery Series refers to all second-generation Roomba vacuuming robots: the Roomba Red, Roomba Sage, Roomba Sage for Pets, Roomba Pink, Roomba Discovery, Roomba Discovery for Pets, Roomba for Pets, Roomba with Intelli-Bin for Pets, Roomba Silver, Roomba Clean Blue, Roomba Discovery SE, Roomba Scheduler and Roomba Scheduler with Intelli-Bin models.

The iRobot Roomba Original Series includes the first generation of Roomba vacuuming robots: the Original Roomba (silver), Roomba Pro and ProElite.