... Temperature-30°C~~50°CReliabilityEvery night working, 365 days in a year, 100% working, Our street lights ... BATTERY. The LED lamp is off at this time In the night when the darks approaching, the LIGHT ... turn on the LED lamp automatically, while this time supplyed by BATTERY. When the dawn come, TIMER ... 15 years4.Who we are?We are Guolu, Founded in February 2000, has160 people, with12,000 square meters ...