1. Power factor >0.99 2. Working temperature:-40¡ãC to +50¡ãC 3. Main frequency: 230KHZ, input frequency: 50Hz/60Hz 4. Special amalgam, instant-start and stable light output in the wide range of temperature. With special technology, faster power start. 5. Self-developed inert gas formula, ensure the consistency of light efficiency and power. Full range of color temperature, a variety of power options. 6. Ballast is protected from short-circuit, open-circuit, etc