The new T 9/1 Bp dry vacuum cleaner from Kärcher features a unique hybrid technology: Depending on requirements, the unit can be operated in either the mains-powered or battery-powered mode. In situations where there is no power outlet or where a power cable could cause an accident, the user can switch to the battery mode. The sound level in normal operation is with 58 dB(A) very quiet, the vacuum cleaner is therefore very suitable for daytime cleaning during opening hours, in heavily frequented areas and in areas with a lot of furniture, e.g. in offices, hotels, shops and cinemas.