Wilson Electronics AC/DC 12 V Power Supply for Wilson Direct Connect and 859903 Series Boosters with 2.5 x 5.5 mm Jack Wilson Building Amplifier AC/DC Home Power Supply (859903) Wilson In-building Amplifier Power Supply AC/DC 12V Power Supply. For use with non-Smart Technology Amplifiers. Converts 120V AC to 12V DC. Plugs into standard wall outlet. 1.8 meter cable