What is the best decision for users to make highly clear and accurate dot alignment at quite close distance? If users are selecting Berlinlasers 5mW green laser diode module, owing to quite nice equipment with inner metal heat sink cooling system and copper made green laser core part, this metal housing tube made red dot laser achieves continuous green dot projection stably. This 5mW green laser diode module enables quite easy use for any industrial dot aligning work field. After proper use of qualified glass coated lens and quite strict laser beam stability tests, it is keeping high beam transmittance and highly clear green reference dot projection in close distance. Every time users are making simple adjustment of laser beam focus and dot targeting direction, this green dot laser obtains high accuracy dot alignment constantly. Technical data: Item: Berlinlasers 5mW green laser diode module Wavelength: 532nm Laser class: IIIa Optic lens: glass coated lens Electric power source: 5V DC input power supply Adjustable focus: yes Applications: laser marking, laser engraving, drilling system and military targeting etc http://www.berlinlasers.com/532nm-green-laser-diode-module