Product Description The PowerLine ​600mA Multi-Use ​AC/DC Wall Plug Power Adapter allows you to power many battery-powered electronic devices that use an AC adapter ​or USB power cord from ​a wall plug. Also allows for convenient selection of plug tip polarity with the simple flick of a switch. Eliminates the need for expensive batteries Fits household AC receptacles Provides User selectable 3 – 12 Volts DC output up to 600 mA User selectable polarity switch Includes 7 plug tips for use with a wide variety of electronic products   NOTE: Model 90381 is the Model 90333 power adapter with the added tips