The Meade 07584 universal AC adapter for ext-90 and newer telescopes is ideal for use with the Meade 10, 12 and 14-inch expel and at, LS, LT, lad, LX, RCX/LX400 and max mounts. This telescope is optimized for USA 120-volts/60-hertz of power. The 2-part adapter has a transformer that converts 110 to 120-Volt household AC power to 12-volt DC power and a 6-inch Grounded AC cord that connects the transformer to normal AC household outlets. It also features an 8-Inch cord with a 5. Millimeters male plug that fits the 12-volt DC power receptacles of most telescopes. This adapter gives 5-amp, 12-volt D output that gives enough power to operate telescopes even when the built-in dew heater is at 100-Percent. The Meade 07584 universal AC adapter comes with a 1-year limited . Meade has everything you need to capture the night sky for experienced star-shooters, serious researchers and beginners alike. Serious astronomers for years have flocked to Meade telescopes for their quality optical systems and patented technology. Consumers know that "Meade optics inside" Means that what they see through our telescopes will be views that are detailed, crisp and full of contrast. Look through a Meade this evening and see what you've been missing.