... use, the viewing angle more vide, can reach to 120 degrees, also, with much lower heat emitting ... with special PMMA material, the transparence can reach to 99%, and normal material just is 85%, ... Solid-state, high shock / vibration resistant 4) No RF interference 5) Maintenance free, easy installation 6) Long ... 185-265V AC 2. Working environment: -20°C to 40°C 3. Work without ballast. 4. Suitability: For ...