Solar Electrical Brush Automatically 1.power supply: connect to 100-240V power source, or to lithium battery (user can choose suitable type for different cleaning environment) 2. water supply: water pipe contains water control valve, can be connected to user’s water source3. Electric water fed brush,specially designed for cleaning solar panels. Double brush head, ensure large cleaning area (cleaning contact area is 80cm). Two brush rotation direction is opposite, effectively neutralizing rotational force, ensuring product stable. Brush head contains water outlets, when brush rotates, water will flow out. Handle is telescopic type, with electricity wire and water pipe inside. We provide three kinds handles: 3.5meter (1.5-3.5m), 5.5meter (1.7-5.5m), 7.5meter (2.1-7.5m). Water saving design, max flow is 180 liter/hour. Lightweight design, total weight of product is about 7 kg, handheld weight is just 1.5KGS