Yes, unfortunately Korea merged the EMC mark, "KCC" and its safety mark "KC" a few years ago, so its unclear what that mark means. It usually means EMC when there are no serial numbers beside the mark, but the law is badly written as KETI states if the numbers can't fit the chassis, you can write it on the manual or box. If your meter has a series of digits beside the KC mark, it could be safety rated.
http://www.kc-mark.com/search?updated-min=2011-01-01T00:00:00-08:00&updated-max=2012-01-01T00:00:00-08:00&max-results=1A manufacturer can receive the KC mark if they pass safety
or EMC. In 2012 the KETI revised the rule to require BOTH.
http://www.bizhard.com/pub/weblink.aspx?type=download&guid=OUFFMjBBRDVGMTMyRjAyRkUwNDAwMDdGMDEwMDYxMER8MTEyMjU0ODQ4.pdfAs example, see photo, a proper KC mark, see red
B, should include a series of numbers that when decoded, specify what its rated for. For example, here is a KC mark for a Fluke DMM.
Because the KC mark is unclear, it is
not recognized as a safety mark by safety agencies like OSHA in the USA or ESA in Ontario.
That's why in the Fluke DMM above, they include all 3 marks, CE for the EU, CSA for international,
red A in photo, and KC for Korea, just to be sure.
That Hioki was willing to get some of its products UL listed as linked below means Hioki's management knew how to certify a product and deliberately released Hioki's newest DMMs line without a clear internationally recognized safety mark.
Note, KC mark being problematic is not alone, the Japanese "PSE", Russian mark, "EAC", China's CCC are not recognized in North America. But if you get an ETL mark from Korea or China, it will be valid in the US or Canada, because Intertek provides a clear set of procedures for what that mark entails.
Many (or all?) Hioki has KC mark.
As "Korea Certification" by KETI (Korea Electric Testing Institute), but it can performed by Intertek as well:
http://www.intertek.com.hk/electronics/kc-mark/
Oh, and this is definitely known:
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/showpage.html?name=PICQ.E201570&ccnshorttitle=Measuring,+Testing+and+Signal-generation+Equipment&objid=1074559392&cfgid=1073741824&version=versionless&parent_id=1073991173&sequence=1
Cheers