UL 60730-2-7-2014 家用和类似用途的自动电控制装置.第2部分:定时器和定时自动开关的特殊要求
UL Standard for Safety Automatic Electrical Controls for Household and Similar Use; Part 2: Particular Requirements for Timers and Time Switches (Second Edition; Reprint with revisions through and including July 31, 2014)