The Model 601 is a multipurpose solar-powered marine lantern suitable for virtually any navigation or hazard-marking requirement up to two nautical miles in range. The 601 takes the durable waterproof design of the industry-proven 501, and adds two nautical miles of visibility, Microsource™ energy management technology, more than 200 flash codes, and user programmability. To date, more than 40,000 units have been used around the world for all types of industrial/commercial applications. Using an array of ultra-bright LEDs, the 601 can produce light output in five colors that meet the international chromaticity requirements for green, red, amber, white and blue. It can also produce all IALA standard flash patterns, and custom patterns can be special ordered.