In order to make highly clear dot measurement at quite long work distance, unless the use of sunlight, it makes good job to operate a Berlinlasers 635nm red laser diode module within 5mW to 100mW. It keeps work with constant red laser beam emission from a 635nm red laser diode. The advanced use of a metal heat sink and APC, ACC driving circuit board are configured with different dimension metal housing tube.
In practical precise dot measuring work fields, only after easy use of 5V, 9V 1000mA DC power supply, this red dot laser alignment just keeps work with constant red laser beam and red dot emission, no affect by overheating and over current in long time use. When ultra compact size tube made device gets proper installation and adjustment of laser beam focus, it achieves high level of accuracy red dot alignment for industrial precise dot alignment, high tech and lab experiment work etc.
https://www.berlinlasers.com/635nm-red-laser-diode-module