Flsah Technology Dual Red & White Obstruction & Tower Lighting - SPX Corp - Red & White tower lighting is commonly referred to as Dual, or by the FAA nomenclature as an E-type tower. Medium Intensity red FAA lights at night are designated as L-864, and white FAA lights during the day are designated as L-865. This section details our dual L-864/L-865 obstruction lighting systems. We offer dual Xenon and LED systems that can be used in medium intensity and high intensity applications. Catenary systems are also available. Our products are ETL certified and are widely used throughout the United States, Canada, South America, and Europe. Please review our products page and contact us if you have any questions.