Combining modern solar technology with advanced LED technology, this is a green new lighting solution. A break through to the traditional daylighting way ( tubular skylight / sky tube), coming out to realize a much more convenient, longer lasting & energy efficient day & night lighting. Features: 1.Good Light Source: Top grade SMD2835 LED, no UV, no leak, no flicker, minimal heat or decay, make long lasting & energy-efficient lighting performance. ldeal Power Supply Modes:Green energy power supply by polycrystalline solar panel, multi power supply modes available. 2.Day & Night Lighting: When with backup power, the solar led skylight system keeps lighting at day and night, for both daily and emergency use, 3.Smart Solar Lighting: Smart controller included, make automatic switchover to backup energy & turn into radar sensor smart lighting mode for sunless periods, not waste a shred of backup power. 4.Green Environmental Kit: Solar led skylight works with green solar energy, allowing savings of up to 90%,as an environmentally friendly kit with no carbon emissions. 5.User Friendly Easy to Install: Quick and easy DIY installation for verious ceiling types, no light shafts, no structural changes, just one plug-in action on wiring, maintenance free. Benefits: 1.Save Money Powered by solar panel without electric bills Energy-efficient LED light source Low installation & maintenance cost 2.Save Trouble Easy and fast installation without light shaft Hands free smart lighting by radar sensor Quality assurance with long lifespan & low maintenance 3.Save Worries Perfectly light up dark spaces where natural light is unavailable Considerate & safe sensor lighting at dark night Continuously light at night / once blackout with backup power