EVS-EN 60335-2-26:2003

Deals with the safety of electric clocks having a rated voltage of not more than 250 V. Examples of appliances that are within the scope of this standard are alarm clocks, spring-driven clocks with an electrically operated winding mechanism, clocks incorporating driving means other than motors. This standard does not apply to battery-operated clocks; appliances intended exclusively for industrial purposes; appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapor or gas); clocks having other functions, whether or not in combination with time indication, such as master control clocks and timers for cooking ranges, washing machines and similar appliances; clocks for "clocking in" purposes; clocks incorporating  electronic circuits only(refer to IEC 60065)