LED High-Mast lighting for highways, interchanges, ports, rail yards, container yards, correctional facilities, truck stops, water treatment plants, large area Industrial, airports, security lighting, toll plazas and sports lighting. The fourth generation Holophane HMAO™ LED high-mast fixture provides long system life and up to 65% energy reduction over traditional HID products. HMLED4 offers the flexibility of multiple lumen packages, integrated control options, both roadway and area optical distributions, all providing the customer choices on light levels and energy savings when replacing 400-1000+ watt HID products. This LED high-mast fixture is designed to excel for both retrofit and new construction. Available with a wide variety of advanced controls options as well as XVOLT feature to enhance power quality protection of 277-480V operation.