As for the "Europe Plug Adapter" linked above, the Amazon page says it is "CE Certified". You should know that. in most cases, CE does not certify anything. The manufacturer analyzes and tests the product for conformity with regulations, and the manufacturer certifies that the product conforms. In the case of these adapters, they are not completely safe. They will accept American polarized plugs (one blade wider than the other). The polarized plug is on the device because UL has required that, for safety reasons, it should be properly connected to a polarized power source. but this adapter allows the appliance to be connected to an unpolarized European power source, so the safety provisions of UL are defeated.