Electric HandHeld Roller Brush for Solar Panels, Store Signs and Billboards Product overview Electric handheld roller brush engineered to remove stubborn stains from solar panels, store signs, billboards and other glazed or flat surfaces. 360 degree continuously rotating brush head with adjustable angle for consistent contact and thorough cleaning. Can increase work efficiency by up to 80 percent while significantly reducing manual effort. Key features Rotation speed: 150 to 300 rpm for effective removal of dirt and residues. Cleaning width: 600 mm for broad, efficient coverage. Cleaning methods: dry cleaning or water washing, selectable during operation. Automatic water supply supported; includes water pump with lift 78 m and flow 4560 L per minute. Working environment temperature: 10 to 40 C. Construction: aluminum alloy telescopic rod and nylon brush wire for durability and gentle but effective cleaning. Telescopic rod sizes (three options) 3section model: longest 3.5 m, shortest 1.32 m, 3 sections, 123 mm per section. 4section model: longest 5.5 m, shortest 1.60 m, 4 sections, 145 mm per section. 5section model: longest 7.5 m, shortest 1.66 m, 5 sections, 150 mm per section. The telescopic rod is adjustable in length and angle to reach or awkward locations while keeping operator control. Available power configurations and package contents Mains electricity type package: 1 x Solar cleaning brush 1 x Water and Electricity Rail Pipe 1 x Water Pump 1 x Power Converter Lithium battery model package: 1 x Solar cleaning brush 1 x Lithium battery pack 1 x Charger 1 x Power converter 1 x Water and Electricity Rail Pipe 1 x Water Pump 1 x Backpack Practical benefits Saves labor and time: rotating brush head and wide cleaning width reduce passes and manual scrubbing. Versatile cleaning: switch between dry and wet modes for quick spot cleaning or deeper wash cycles. Reach and control: choice of three telescopic lengths and adjustable brush angle makes panels and signs accessible without ladders or scaffolding. Durable components: aluminum alloy rod and nylon bristles balance strength and safe contact with glass and coated surfaces. Use scenarios Solar farms and rooftop PV arrays: remove dust, bird droppings and residue to maintain panel cleanliness on arrays of any height. Retail fronts and illuminated signs: clean store signs and billboard faces without taking down signage or using scaffolding. Building facades and solar canopies: reach glazing and canopy panels on commercial buildings with the telescopic rod and water washing option. Technical summary Product name: Electric HandHeld Roller Brush Cleaning brush speed: 150300 rpm Cleaning width: 600 mm Cleaning method: dry cleaning or water washing Water pump: lift 78 m, flow 4560 L per minute Material: aluminum alloy telescopic rod, nylon brush wire Working environment temperature: 10 to 40 C This product is designed to provide reliable, adjustable, and efficient cleaning for solar panels, signs and billboards with options for mains or portable battery operation.