... work times more than 100,000 hours,3.LED light source ,energy-saving and environmental-protection.5.The system is controlled by ... microprocessor which turns on the light when electricity is off and turn off the light when the electricity is on,6 ... angle,voltage6.Price will be depended on the LED light soarce,light color,material,and etc.7.Packing:standed exported carton. Fire Emergency ...