kuohai 12W Universal Power Adapter Plug Multi Voltage 3V 4.5V 5V 6V 7.5V 9V 12V AC DC Power Supply Charger 3V-12V

Features:  1. This AC/DC adapter(efficient voltage is from 3V to 12V) can apply to different kinds of electronics.?NOT compatible with laptop or other high power equipment?  2. This adapter output is 3V/4.5V/5V/6V/7.5V/9V/12V.  You can adjust the voltage by a small key included with the adapter.  3. The 6 adapter plugs with different size can fit for many different appliances.  CAUTION: DC Plug Polarity: inner Positive(+), outer Negative(-). Some devices requires inner Negative(-) and outer Positive(+), totally opposite.  So please check carefully before buying!  Specifications:  Input:110-240V  Output: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V.  Six Different Detachable DC Plugs Dimensions: 5.5x2.5mm, 5.5x2.1mm, 4.0x1.7mm, 3.5x1.35mm, 3.0*1.1mm and 2.5x0.7mm. Product specification:85 * 50 * 34 mm  DC line length: 1.2 m