Features: 1.Solar Panel: Adopted tempered glass surface, which can prevent weathering and wear, long service life, made of high efficiency monocrystalline silicon, can generate more electricity in full sunlight. 2.Battery Protection: The charge controller can prevent battery overcharge, overdischarge, overvoltage, short circuit and reverse current, extend battery life. 3.Intelligent Control: Automatic charging during the day, shutdown at night, reduce nighttime consumption, improve daytime efficiency, and do not consume battery power. 4.Practical: High temperature resistance and waterproof, can easily cope with outdoor harsh environment, has high charging efficiency, with four suction cups, prevent falling. 5.Kit Includes: Package includes 12W monocrystalline solar panel, electric controller, etc., which can be widely used in RVs, motorcycles, ships, tractors, trailers, trucks, lawn mowers. Specification: Item Type: RV Solar Panel_x000D_ MaterIal: Polysilicon + metal + ABS_x000D_ _x000D_ Protection Class: IP65_x000D_ Solar Panel Power: 12W_x000D_ Solar Panel Working Voltage: 18V_x000D_ Solar Panel Open Circuit Voltage: 21.6V_x000D_ Solar Panel Short Circuit Current: 0.55A (Maximum)_x000D_ Controller System Voltage: 12v/24v Adaptive_x000D_ Controller Working Temperature: -35+60_x000D_ Output Port: Dual USB, DC 5521 Female plug_x000D_ Solar Panel Size: Approx. 280x280x3mm/11.02x11.02x0.12in_x000D_ Features: Integrated Voltage Regulation Module, 5V Dual Usb Regulated Output_x000D_ _x000D_ Application:_x000D_ Can be widely used in batteries for motorcycles, boat, tractor, trailer, truck, lawn mower, RV etc. Also be used for gate openers, electric fences, chicken coops, sheds, and lights Note: Please read the instruction manual carefully before installation