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Infrared Smart Pen for Interactive Whiteboards (P35; Wavelength: 940nm) — Battery-Powered Laser Writing Pen for Smart Whiteboards, Find Details and Price about Interactive Pen Infrared IR Pen from Infrared Smart Pen for Interactive Whiteboards (P35; Wavelength: 940nm) — Battery-Powered Laser Writing Pen for Smart Whiteboards - OWAY GROUP LIMITED