DOKIO 2PC Solar Panel 100W 18V Monocrystalline 200W with 20A ControllerHIGH CONVERSION EFFICIENCY With high efficiency monocrystalline solar cell, you will get greater power efficiency even though the solar panel is smaller than a traditional model. EASY TO SET UP AND USE 4 mounting holes are available to attach fasteners. Waterproof design, tough, sealed aluminium frame is perfect for all weather conditions. ROBUST AND WATERPROOF Corrosion resistant aluminum frame for extended outdoor use, allowing the panels to last