... -corrosion,anti-sandstorm,electromagnetic&mechnical combined brake system, automatic navigation. Power of solar panel From 20w to 280w: Mono or Polycrystalline ... with designed life of 25 years. Power of Light source From 15w to 250w: LED,MH ... operate safety 6.The control system build in wind power and solar power input function 7.LCD control system display, easy to ...