It is a single brush, cable powered version with a cleaning width of 48,5 cm. There is the possibility to adjust the angle of the brush in order to have it helping the traction. This single brush version is provided with the automatic brush docking without manual intervention and it is particularly indicated for small environments inside school or hospitals and so where it is necessary a frequent brush cleaning. It is particularly indicated for small environments possibly free from obstacles so where the power cable does not represent an obstacle during work. Ruby models are also particularly silent thanks to the soundproofing system of the suction motor patented by Adiatek.