... weight, safe, long life, high load efficiency, and working stability. With open circuit, short circuit, over current and over voltage protection ... consumption, saving 60% energy than the electric energy saving lamp with same luminous. 5. Low light declines, the life span is ... . Products can start normally on this condition: indoor temperature: -20°C~+45°C RH(relative air humidity):<90%(25°C±5°C) 5 ...