Different from a formally used 532nm green DPSS laser system, the real use of a 515nm green dot laser alignment always makes longer time lasting dot projection from beam aperture. It applies an import 515nm green laser diode within 5mW to 50mW as beam emitting source. Being made with cooling system and APC, ACC driving circuit board inside different dimension metal housing tube, it keeps work with constant forest green laser beam and green dot projection, and long serving lifetime in proper use. 
This green alignment laser applies 5V, 9V 1000mA AC/DC adapter, which enables long lasting forest green laser beam and green dot projection within 10 hours per day, not effected by increasing temperature and serious electric current impact as well. It keeps work with high density forest green laser emission, after easy adjustment of laser beam focus, it gets increasing accuracy and brightness green dot projection for all industrial machinery processing works effectively.
Applications: industrial device manufacturing, laser marking, laser engraving, drilling system, military targeting, high tech