Seniod Solar Street LED Light system converts the suns energy into electricity and stores it to provide up to about eight hours of light plus three to four days. Features: A: Leave behind 60cm electrical wire to shorten the assembly time(Can be installed on any lamp poles directly) B: Long lifetime and low maintenance cost(50 000Hrs) C: Anti-impact intensity: IK10(20J) & fire resistant level:850/5s D: Operating temperature: -20-50 E: Level of dustproof & waterproof: IP65