Honeywell Obstruction Lighting is located in Urbana, Ohio with business hours from 8:00 AM to 5:00 PM EST, Monday through Friday. For Obstruction Lighting Customer Service or Technical Support please call 877-285-4466 and select the appropriate option. International callers use 937-484-2000. For after hours Flex-Tech Support between 7am - 7pm EST please call 937-869-6406 or 937-869-6290, or arrange for an Evening or Weekend Technical Support appointment by calling 877-285-4466, Option 4, during regular business hours. New Page: Internet Sales Specials. These items will be available on a first come, first serve basis and quantities may be limited. Please contact Customer Service at 877-285-4466, option 1, to place an order for these items.

Medium Intensity Dual Obstruction Lighting Standards
(FAA Style E)

	L-864/L-865 Flashing Dual (Red/White) Strobe
	L-810 Obstruction Light

Notes:

• The overall height of the structure including all appurtenances such as rods, antennas, obstruction lights, etc., determines the number of light levels.
• The dual lighting system includes red lights (L-864) for nighttime and medium intensity flashing white lights (L-865) for daytime and twilight use. This lighting system may be used in lieu of operating a medium intensity flashing white lighting system at night. There may be some populated areas where the use of white medium intensity at night may cause significant environmental concerns. The use of the dual lighting system should reduce/mitigate those concerns.
• The chart above illustrates the requirements for standard lighting of towers and supporting structures in accordance with FAA Advisory Circular 70/7460-1; Chapters 3, 4, 8, and 12.