LED solar warning lights Features Multi-Layer LED superimposition---extremely longlife up to 100, 000 hours 155MM frensel lens made of polycarbonate, which is resistant to shock and acid. Built from heavy-duty die-casting aluminum alloy---offer customer' s excellent corrosion and weather resistance Perfect combination of high-efficiency monocrystaline silicon solar panel and high-capacity storage cells provides adequate power for the flasher to keep flashing for 20 continuous overcast and rainy days. During daylight hours the solar module will charge the battery through photo-switch incorporated into the flasher unit. The lamp will automatically begin operation at dusk-----once the ambient light threshold drops sufficiently. Light circuit controlled by microprocessor single-chip Free maintenance within three years in normal use. Color available by red, white, green, yellow, blue Environment-friendly bird spike---deterring unwelcome bird life. TECHNICAL DATA Model QT-S160M LED QT-S160L LED Voltage DC11v-18v Flash frequency 20-60times/ min( adjustable) Effective intensity 1500cd-2200cd 3000cd Photo sensitivity 50-300lx Solar panel power 10w 20w Capacity of battery 12V/ 24AH 12V/ 55AH Working conditions -40C° ~ + 60C° Protection grade IP65 Size( L* W* H) 480mm* 380mm* 700mm 640mm* 500mm* 780mm Net weight 15kg 25kg