30W Universal AC Adapter Reversible Polarity Multi Voltage DC Power Supply, With 9pcs Adaptor Tips, Compatible With 3V to 12V

✔WIDE APPLICATIONS: for router, speaker, monitor, camera, smartphone, led strip, piano, keyboard, effect pedal board, and a variety of household electronics require.

✔PACKAGE INCLUDES: 1 x 3-12V multi-voltage ac adapter, 9 x changeable adapter tips, 1 x key. Each adapter tip has the clear dimension mark, no mess and convenient for you!

✔Comes with protection of over voltages, over current, short circuits and over temperature, more safety!

❤Instructions:

1. Connect the correct adapter plug Select a suitable plug and then insert into the DC cable end, make sure it's firmly attached to the power port of your device.

2. Set the right DC output voltage There are 7 Volts options. (use the little key to choose the right voltage. If the required voltage is not in the options, please choose the closest one. eg, if your device needs 5.5V, you can choose 5V or 6V)

1.Please check the device polarity carefully, and choose the correct polarity setting!

2.Not for Over 12V electronics or laptop, for example, if you device required 19V DC, it’s incompatible!

FAQ:

1. How Can I Change and Confirm the Polarity?

Answer: Check the polarity symbol near the device specification sticker or power port. Our adapter cord end and tips have the polarity symbol, the same symbol connection is the correct polarity setting.

2. What's the function of the KEY?