【Premium Quality Electrical Adapter】 ETL Listed. JACKYLED 3-2 prong adapter is made of fire-proof material PBT that is high temperature-resistant up to 200℃. With AC 125V/15A and Electrical Rating 1875W Max Wattage, this light socket outlet 3-prong is sturdy enough for working with electrical, household, Industrial, machinery and other appliances. | 【Wall Outlet Converter】The 2 prong to 3 prong outlet adapter can covert a grounded electric extension power cord to an AC outlet without a grounding pin slot, perfect for older houses or offices with AC wall outlets that can not accept grounded plugs. | 【Polarized Plug】The 3-prong to 2-prong grounding adapters is polarized and better than the un-polarized plug adapters, because polarized plugs only allow you insert the plug into the outlet slots in one direction, wide blade to wide slot, narrow blade to narrow slot, which ensures neutral-to-neutral, hot-to-hot and provides a measure of safety for the appliances and house wiring to be aligned in terms of polarity. This also explains why most household appliances’ plugs are polarized. | 【Grounded Protection】This three-prong to two-prong adapter plug fits snugly into the wall outlet without falling out when plugging a heavy cord into the adapter. It has a metal grounding tab/ ground terminal to fit neatly under the outlet plate screw and provide a proper grounding for safety. | 【US to Japan Travel Converter】This 3 prong to 2 prong adapter is also a handy electrical converter for travelling to Japan. All outlets in Japan is 2-prong, so with this light plug adapter, you can easily charge your 3-prong electronic devices, like laptop, tablets, smart phones, electric shaver, speaker, etc.