24 inch Solar LED Traffic Safety Sign can be used on streets, in parking lots and more.LED solar traffic safety stop sign is an environmental protection traffic signage, It is built with a unique aluminum alloy board and solar board combined together. This stop sign will increase visibility for drivers on the road or in shopping centers with its bright blinking (flashing) LED lights. Since these are solar powered they can be used anywhere there is sun light. This product is very simple to install and useProduct Specifications:Type: Solar LED Traffic Safety SignWorking Mode: 12 hours per day or 24 hours per day, flashing or constant lighting optionalVisible distance: >2500 feetWorking Time: After one full charge, 5-7 consecutive daysLife Span: 3-5 YearsThis product can provide electronic invoices