Review on 🔌 4 Pack of ETL Listed 3-2 Prong Grounding Outlet Adapter by JACKYLED - Portable Fireproof 200℃ Resistant Heavy Duty Wall Outlet Plug Converter for Household Appliances Industrial by Tom Reasons

Don't know. I ordered this product over Thanksgiving weekend and it arrived quickly in 2 days. I gave it to my DH so that the extension cord for some lights in the yard could be plugged in and synced to the timer clock for the lights in the house. Except he never went up the stairs to install it, so yes, we're the house on your block that has the Christmas lights on 24/7 and I'm sure our neighbors hate us. (I had a knee injury and can't climb stairs safely or I would have done it myself!) Today is Christmas, so yes. In any case, these adapters seem quite functional, arrived quickly and at a reasonable price. I'm not sure how purity applies (one of Revane's clues). If we ever use them I will update.