Robotic, mobile apparatus for treating a room, for example by disinfection

A robotic, mobile apparatus (1) for treating an enclosed space (53) comprises a wheeled carriage (3) on which a treatment device (2) is mounted. A controller (14) is provided that is configured to control operation of the wheels (12) of the carriage (3) and to operate the treatment device (2). A human-machine interface (HMI) (5) is also provided that is in communication with the controller (14) and is operable to start and stop a treatment procedure. The treatment device (2) is electrically powered via a mains supply using an electrical cable (30) and a management system (31, 37) is provided that controls the tension of the electrical cable (30) in order to prevent the wheeled carriage (3) from becoming tangled in the electrical cable (30) when it moves robotically. Preferably, a pivotally mounted arm (35) extends from the wheeled carriage (3) and the electrical cable is threaded around an end of the pivotally mounted arm (35) whereby the cable (30) is guided around the exterior of the wheeled carriage (3).