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.