Qooltek Solar Powered Emergency LED Strobe Warning Light Wireless Garden Lamp Flashing Barricade Safety Sign Road Construction Signs Flash Traffic Lights Flicker Beacon Lamps (Red) Automated switch: just pull the switch to "ON",it will automatically charging during the day,and illuminate automatically at night. LED light control,super bright LED flash 110 cycles per minutes; Light visual distance of 500 m in dark. Multi-functionally warning lights: suit for traffic construction, crane tower, vehicle, house ect. Installs easily in seconds, No wiring necessary, just fix the bracket on the place where you need. Power supply by solar, environmental protection and conservation, no pollution.