zbh-2000：
PowerunitswithalloutputsidentifiedasClass2arecoveredundertheStandardforClass2PowerUnits,UL1310.portable,stationary,andfixedpowerunitshavinganinputratingof600voltsorless,direct-andalternating-current,withatleastoneoutputnotmarkedClass2,andthatareintendedtobeemployedinordinarylocations,UL1012