Solar LED Flashing Warning Lights: Light Source: 4 LED Visible Angle: 2 Sides Light Visual Distance: ≥500 Meters (In Dark) Operating Temperature : -20 - 60 Centigrade Solar Power Charging: Solar Panel: 0.3W -0.5W silicon solar panel; during the day Automatically charging during the day at night Flash automatically at night Material: PC+PP+ABS Waterproof: IP54, you can use it in rain days. low voltage LED with low voltage, use with confidence. Solar warning light flashes automatically once it sense darkness, automatically charging under the sunlight, 4 LED bulbs,light visual distance of 500m in dark. Easy DIY Installation: No wiring Needed.Pull the switch to "ON"Place the warning light where you needKeep the solar panel face to sunlight Multi-functional Night Warning Lights Traffic construction : warning cars away from the playing childrenCrane tower : warning helicopter and UAV away from danger zoneVehicle surface: warning other cars stay awayHouse/ Garden : keep the animals awayRiverside : warning cars or people not to fall in the water.