... , tempered glass Protection grade: IP60 Life expectancy: 5 years Effective light: 150 / P1m / w, respectively, could be saving 90 ... . Bryant High efficacy electrodeless lamp, more energy than other light sources. Characteristics: Long-life: average life expectancy of 100 ... , stores, streets, parking lots, gas stations, stadiums, bridges, lighting, etc., in particular, apply to, such as a tunnel, subway ...