SoulBay 12W Universal AC Adapter Reversible Polarity Multi Voltage DC Power Supply, with 9pcs Adaptor Tips, Compatible with 3V to 12V Household Electronics, 1.2Amp Output

WHAT IS Reverse Polarity: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable.
Versatile POWER SUPPLY: straightforward adjustment for All-in-one multi adapters and multi amp devices, solid and well built. Voltage range, connector jacks and polarity are Selectable.
WIDE APPLICATIONS: for router, speaker, monitor, camera, smartphone, led strip, piano, keyboard, effect pedal board, and a variety of household electronics require 3 volt, 4.5 volt, 5 volt, 6 volt, 7.5 volt, 9 volt, 12 volt DC output with 1200ma load.
SAVES ON ADAPTERS: Own this adapter, you could use it for multiple devices and replace a lot old power adapters, saving on buying a new electronic device or extra original expensive power supply.
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! (Note: Not compatible with some Sensitive Electronics, such as AM/FM Radio. )