Memex Universal AC/DC Adapter/Charger 300mA, 3V, 4.5V, 6V, 7.5V, 9V, 12V DC, 110V/220V Regulated Universal AC to DC Converter with Multiple Connector Ends Universal replacement power adapter for many kinds of household electronics, like Router, Radio, Speaker, CCTV camera LCD 7 different kinds of Voltage adjustment from 3V to 12V, can power much more devices for you, Small household appliances usuallly don't have circuit protection, if with the wrong voltage, may damage your device. It is important to choose the right voltage before powering your device. If your device use AA or AAA, then each piece is 1.5V, 2 piece choose 3V, 3 piece choose 4.5V, 4 piece choose 6V Input:110-220V, Output: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V 7 universal plugs Safety: CSA Approved Plug Dimensions: 5mm x 2.1mm 3mm x 1.0mm 2.35mm x 0.75mm 5.5mm x 2.5mm 4mm x 1.7mm 3.5mm x 1.4mm 5.5mm x 1.5mm