The Most Reliable Used Berlinlasers 5mW to 100mW 450nm Blue Laser Diode Modules
Either dot aligning work is processing of long distance or long lasting use, Berlinlasers 450nm blue laser diode module makes good job with easy connects with 5V, 9V 1000mA AC/DC adapter. It projects highly visible and intense blue laser beam directly from a 450nm blue laser diode. Only if it selects correct output power and makes proper adjustment of blue dot diameter, within freely installed distance of 3 meters, this blue dot laser assures no barrier and noncontact dot alignment for all application fields perfectly.
https://www.berlinlasers.com/450nm-5mw-100mw-blue-laser-diode-modules