Meade Instruments 07584 Universal AC Adapter for EXT-90 and Newer Telescopes (Black) Compatible with Meade 10, 12 and 14-inch ETX-PE, AT, LS, LT, LXD, LX, RCX/LX400 and MAX mounts Optimized for USA 120-volts/60-hertz of power 2-part adapter has a transformer that converts 110 to 120-volt household AC to 12-volt DC 6-inch grounded AC cord that connects the transformer to normal AC household outlets Comes with a 1-year limited warranty