Multi Voltage Power Adapter, Reversible Polarity 30W Universal 3V 4.5V 5V 6V 7.5V 9V 12V Supply Adapter Charger for Keyboard Routers Speakers Pedals CCTV Cameras TV Box Audio

WHAT IS Reverse Polarity: Most adapters only have single polarity, positive (+) or negative (-) polarity. This HELPER 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 2000ma 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. MULTI-VOLTAGE ADAPTER - Input: AC 100v~240V 0.25A 50/60Hz, Output: 3V/4.5V/5V/6V/7.5V/9V/12V - MAX 2000 mA. This replacement power adapter provides a range of voltages, FULL PROTECTION of over Voltages/ over Current/ short Circuits/ over Temperature. 9 Connection Tips Spec.5.5*2.5mm, 5.5*2.1mm, 5.5*1.5mm, 5.0*2.1mm, 4.0*1.7mm, 3.5*1.35mm, 3.5mm mono, 2.5mm mono, Female USB plug. 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. )