Output adaptor jack size : Fit both 5.5mm x 2.1mm and 5.5mm x2.5mm the adapters Connector This is an UL Listed volt power cord with a length of 1.2 meters (47.2'') of wire, Rated output voltage: DC 12V 500ma, working voltage: AC 100-240V 50 60hz, compact design, insulation resistance, it has been passed the US standards for safety use Non waterproof, store it in a dry place and away from heat, risk of electric shock, over current (120%-300%) and short circuit protection, continuous working 24hrs have NO damage at the output current 0.5 Amp The 12V transformer charger can replace broken charger, works as genuine parts, widely use in battery charger, security camera, piano keyboard, humidifier, air purifier, led strip light, desk light, household appliances etc.