High efficiency LED Driver. The wide range input voltage AC100-277V or AC200-480V. Lumileds LED high luminous efficiency and long life. Cast Aluminum design, better cooling and easy replacement, light quality, LED Tj < 85°C. Excellent optical design, greatly improve the light utilization and evenness. Photocell Control Available (Option). Working Temperature: -30~45°C / -20~113°F. Storage Temperature: -40~80° / -40~176°F