US Double Adaptor; Twin UK to USA adaptor with integrated nightlight Product Details; A twin UK to USA adaptor that also comes complete with an integrated nightlight. Stops the need to crawl on your hands and knees round your hotel room in the dead of night looking for somewhere to plug your phone charger in. Please ensure you purchase the correct product for the country you will be using it in as plug configurations and voltages vary. Technical info; Twin UK to USA adaptor with integrated nightlight. This adaptor does not convert voltage.