Features: Great Engraving Performance: The focus of the LU2-2A laser module is smaller. It is the second generation FAC laser module, the focal length is only 30mm, so that the engraving effect is more fine. Efficient and Time-saving: Luminous power 2100mW, higher power, to achieve better engraving and cutting, engraving efficiency is high, save time. Dissipation System: Thanks to the aluminum housing and radiator, the heat can be quickly dissipated, and the machine will not overheat when it runs for a long time. Default focal length: 50mm focal length, engraving distance, no need to worry about hidden dangers of laser. High precision: High precision control laser beam, more stable continuous output power, long service life. Specification: Model: LU2-2A Voltage: 24V Laser Power: 2100mW Focal Spot: 0.047x0.09mm Focal Length: 30mm Wavelength: 445+5 nm Product Size: 40 x 41 x 115.5mm Package Weight: 460g/16.2oz Package Size: 25x14x10cm/9.8x5.5x4in Packing List: 1 x Laser Engraving Module