Not simply relying on manual dot projecting tool or laser pointer device, it would be quite easy and efficient choice to make use of Berlinlasers economy red dot laser alignment. It employs import 650nm red laser diode tech and inner thermal emitting system inside durable aircraft used aluminum alloy housing tube, it achieves excellent thermal emitting and increasing stability red reference dot projection in continuous use. This economy red dot laser alignment enables easy and immediate dot projection after connect with a DC input power supply. It is able to work with wide range output power from 5mW to 100mW, under operation with constant red dot projection work, it is also keeping high beam stability under overheating and over current. In addition, after correct selection of output power and proper adjustment of laser beam focus, this 650nm red laser module achieves the most satisfied dot positioning result in distance efficiently. Technical data: Item: Berlinlasers economy red dot laser alignment Wavelength: 650nm Output power: 5mW-100mW Laser class: IIIb Optic lens: glass coated lens Adjustable focus: yes Applications: laser marking, laser engraving, drilling system, military targeting etc http://www.berlinlasers.com/economy-red-dot-projecting-laser-alignment