In order to get extremely clear dot alignment at quite long work distance, formal green laser pointer might only be used for temporary dot positioning work. However, laser tech engineer is developing a much more practically used device of 515nm 50mW green dot laser module. It projects highly bright and intense forest green laser light from 515nm green laser diode. On consideration of its high thermal consumption, after correct use of 9V 1000mA DC power supply, it enables intense forest green laser beam emission and highly clear forest green dot alignment. This 515nm 50mW green dot laser module gets excellent use of qualified glass coated lens. Whenever it gets quite strict laser beam stability tests and special use of glass window in front of laser beam aperture, it keeps work with high beam transmittance and highly clear green dot projection at great distance and other high lighting occasions. User can also make quite easy screw of adjustable focus optics, after immediate laser light focusing, this green laser alignment achieves high level of accuracy dot alignment in multiple fields effectively. Technical data: Item: Berlinlasers 515nm 50mW green dot laser module Laser class: IIIb Optic lens: glass coated lens Adjustable focus: yes Power source: 9V 1000mA DC input power supply Applications: laser marking machine, laser engraving machine, drilling system and lab experiment etc http://www.berlinlasers.com/515nm-green-dot-laser-module