When dot measuring work is processing under all night vision fields, none of manual dot projecting tool can be comparing with a 808nm infrared dot laser alignment. It emits intense infrared laser light directly from 808nm infrared laser diode. The basic use of metal heat sink cooling system is configured with durable metal housing tube, it achieves excellent thermal emitting, and increasing stability IR dot projection in long time use. The genuine use of AC/DC adapter assures constant IR laser beam emission from 808nm infrared dot laser alignment. It gets proper use of 16mm and 26mm diameter metal housing tube, but also assures easy installation onto other night version device. Within the maximum installed distance of 3 meters, compact size infrared laser module makes sure of the most convenient adjustment of laser beam focus, and the most precise IR dot indication at various work distances effectively. Technical data: Item: Berlinlasers 808nm infrared dot laser alignment Output power: 100mW-500mW Laser class: IIIB, IV Optic lens: glass coated lens Adjustable focus: yes Power source: 5V, 9V 1000mA DC power supply Applications: military targeting, night hunting, laser medical therapy and lab experiment etc http://www.berlinlasers.com/808nm-infrared-dot-projecting-laser-alignment