An air purifier is typically set to clean a set number of square feet in a house or building, say 100 square feet (9 sq m). That means nearby rooms don't benefit, and you may even wonder about the perimeter of the room in which you have the purifier, and whether air particles in that area are being cleaned. The Rydis H800, a robot air purifier from Moneual, addresses these concerns by roaming the house in search of dirty air to clean and purify.

Rydis combines a HEPA filter using activated carbon with a washable pre-filter. An optional Semi ULPA filter impregnated with activated carbon makes for a thorough job for the unit's five-level filter system.

As the H800 roams the house, you may think of another robot with a four digit name, R2D2. The white and black unit is cylindrical in shape and stands about two feet (0.6 meters) high. An auto-navigation system powered by a built-in gyro and PSD sensor helps the unit find a proper moving path and minimizes blind spots. Furniture and other objects are avoided with a built-in obstacle-detecting sensor system.

You can use a multi-function remote control to turn filter settings from low to high, or to send the H800 into another room. In sleep mode, the H800 operates at a 22dB sound level, and in turbo mode it can go up to 48dB.

A charging station keeps the free-range Rydis H800 powered up during down time. The robot is on wheels, so it's limited to one level of a house or building. It operates well on bare floors, though we don't know how well it runs on carpeting or rugs.

Details on price and availability of the Rydis H800 were not provided by Moneual.