... energy saving automtaically turn on /off Solar Street Light(WS-SL-S10)Solar street light (WS-SL-S10), with one solar panel ... ...SpecificationsSolar Panel 140W, monocrystalline or polycrystalline, conversion efficiency: 15%Light Source 30W, individual CREE LEDs, 2175 lumens, 0.3 ... ~ 3 cloudy or rainy days backupOptions for Solar Street Light (WS-SL-S10)Light Power 15W, 18W, 21W, 30W, 42W, 48WPole ...