本标准适用于在I类和II类、2类、I类、2区和III类、1类和2类危险（分类）场所使用的穿戴式和手持式便携式电子产品，这些场所未列出或标记危险（分类）场所。

This standard applies to both body-worn and hand-held portable electronic products for use in Class I and II, Division 2, Class I, Zone 2, and Class III, Division 1 and 2 Hazardous (Classified) Locations which are not available listed or labeled for hazardous (classified) locations.