is a rain gutter
made and sold by iRobot
The Looj is a 2¼ in. (≈5.72 cm.) tall and 3¼ in. (≈8.26 cm) wide robot that fits inside most gutters to clean out debris stuck inside them, such as leaves and pine needles. It has long treads on its side that allow it to move inside the gutter and an auger attached to its front. The auger, spinning at 500 RPM, dislodges and removes almost all of the debris inside the gutter. It also has a detachable handle/remote, with a 75 ft. (≈23 m.) range, that is used to carry and operate the robot. The Looj can move in forward and backward directions, and the auger can also spin in both directions, controlling the direction of the debris removed to ensure that it is driven away from the home. The Looj is waterproof up to 1 ft. (≈30 cm.), and can be cleaned by washing it off with water. It comes with a 7.2V Nickel Cadmium rechargeable battery. On a single charge, which takes 15 hours, the robot can run for 30 to 45 minutes, depending on use.
To operate, the user places the Looj on the belt clip or holster that comes with the robot. The user then places the Looj inside the gutter, removing the detachable handle/remote. After driving the robot back and forth through the gutters, it is driven back to the starting position, where the user can pick it up by attaching the handle/remote. After finishing cleaning, the robot can be washed with running water.