This adapter does NOT convert voltage and it won't work in the UK / Ireland / South Africa / HK, will not work with devices which rated voltage is lower than 110 volts either.
Compatible Countries: Bangladesh/ Bhutan/ Botswana/ Chad/ Congo (Democratic Rep. of)/ Dominica/ French Guiana/ Ghana/ Guadeloupe/ Guyana/ Hong Kong/ India/ Iraq/ Jordan/ Lebanon/ Libya/ Macau/ Madagascar/ Maldives/ Martinique/ Monaco/ Myanmar/ Namibia/ Nepal/ Niger/ Nigeria/ Pakistan/ Qatar/ Saint Kitts and Nevis/ Senegal/ Sierra Leone/ South Africa/ SriLanka/ Sudan/ Tanzania/ United Arab Emirates/ Yemen/ Zambia/ Zimbabwe, etc.