Solar Warning LampOur solar warning lights are light - controlled with switches. It automatically recharges through the sun. If there is no light or the light is weak it will blink automatically.Solar charge do not need to replace the battery. When you receive the goods please put it in the sun to sun to charge otherwise it will affect the brightness and flicker frequency. Please feel free to contact me if you have any questions. It was used on the construction site the highway the side of the road the railway the runway public security office high-rise buildings bus stop sea fishing boats agricultural cultivation. Planting and so on.Features: Battery Capacity : 600 mAh Flicker Frequency : 50/min LED Beads : 3 Power Consumption : 0.3W Standby Time : About 15 days Distance : About 400m ( Sunny Day ) Operating Temperature : -30~50C Attention : If the type what you need is not show on the option please contact the seller ! Origin:CN(Origin) Smart home platform:NONE Certification:NONE Model Number:A with button