FX 300 Series B+L Step-Down Electronic Transformer | 300W 12V or 24V
300W 12V Waterproof IP67 LED Power Supply Driver Transformer, LED Power Supply Adapter 100-240V AC to 12 Volt DC Output, for LED Light, Computer Project, Outdoor Light for Outdoor Use - - Amazon.com
12V Transformer 300W Pro Series by Kichler at Lumens.com
Stone Lighting - Product Details - 12V 300W AC Surface Mount Magnetic Transformer
300W Outdoor Low Voltage Transformer with Timer and Photo Sensor, 120V - Venus Manufacturing