Adjustable and visable display voltage, can be adjusted the voltage from 3V - 24V through the display. Input: AC 100-120V, Output: DC 3V - 24V, 1.5Amax. Come with 8 Plugs, Fit for power supply needs in different Devices. Special Buit-in Power on/off switch, more convenient and easy to control the adapter with this function. All-in-1 Adapter - fit 90% of AC/DC Home & Outdoor appliances, widely use in multiple devices. (WON'T WORK ON COMPUTER!!!)