Plug-in regulated power supply with 3-12 V DC switchable output. LED indicator and selectable polarity. Comes complete with 8 DC adaptor plugs. Features include, IC regulated DC output, short circuit protection and automatic overload cut off. Now including 2.5 3.5 2.35 x 0.75 3.5 x 1.35 4.0 x 1.7 5.0 x 2.1 5.5 x 1.5 5.5 x 2.5 plugs, for use with a host of modern portable appliances