Easy to Operate Adjust the corresponding Voltage according to your electrical appliances. DC Plug Polarity Inner Positive(+), outer Negative(-). The Polarity is NOT compatible with laptop or other Over 12W Devices; Please check the device polarity! Variable Voltage This adapter offers the 3V/4.5V/5V/6V/7.5V/9V/12Volt settings, compatible with different small electronics. With Selectable DC Output up to 12 Volts and Plugs It fits most small electronic devices, a great alternative of various batteries. Wide Compatibility A universal power supply for pedals, wireless receivers, printers, chess set, LED base, games consoles, paper shredder, DVD players, radios, speaker, audiotape recorders, players, electronic gizmos, blood pressure monitor, and many other 3V to 12V Small Home Electronics devices.
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