> Some 2-prong devices are perfectly safe because they are double insulated. This is also called Class II and the symbol for it is a square inside another squar

> Some 2-prong devices are perfectly safe because they are double insulated. This is also called Class II and the symbol for it is a square inside another square. Interesting. FWIW, besides the UL logo, my rice cooker has no safety or regulatory markings, and the Zojirushi webpage makes no mention of double insulation or any extra safety features.