SableLED® lamps accept line voltage of 120-277VAC, making it relatively easy to retrofit most existing fluorescent fixtures by simply bypassing the ballast. (Do not insert SableLED lamps into ballasted fixtures without first bypassing the ballast.)Because SableLED® lamps require no external ballast, they reduce the maintenance costs from having two points of potential failure (lamp and ballast). Simply replace the lamp when it fails. SableLED® lamps are also rated for 20,000 hours, which further reduces maintenance costs, especially for large facilities like bowling, laser tag, and indoor golf centers.