【Universal Power Adapter】Output: 3V/4.5V/5V/6V/7.5V/9V/12V; Input: AC 100V-240V 0.25A 50/60Hz; USB port: 5.0V 2.1A. Voltage adjustment: From 3V to 12V, twist the voltage dial clockwise according to the indicating arrow; from 12V to 3V, twist the voltage dial counterclockwise. 【Multipurpose AC/DC Adapter】This international adapter includes 8 different adapter plugs, which can meet your daily needs. 【Easy to Use】Our universal plug adapter is easy to use, just plug the adapter into the equipment you need and connect to the power supply. 【Wide Application】This universal power supply is suitable for various household electronics such as routers, CCTV cameras, LED light strip, speakers, radios and so on. 【Warm Tips】Please carefully check the output voltage, current and polarity of your equipment before purchasing.