IEC 60335-2-54:2008 deals with the safety of electric cleaning appliances for household use that are intended for cleaning surfaces such as windows, walls and empty swimming pools by using liquid cleansing agents or steam, their rated voltage being not more than 250 V. It also covers wallpaper strippers. The principal change in this edition as compared with the third edition of IEC 60335-2-54 is as follows: The scope has been further restricted to cover appliances where the product of pressure (in MPa) and container volume (in l) does not exceed 5. As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in household and similar environments. However, in general, it does not take into account - children playing with the appliance, - the use of the appliance by children. It is recognized that very vulnerable people may have needs beyond the level addressed in this standard.