Berlinlasers 650nm Red Laser Diode Module Review In order to make stable dot alignment at various work distances, none of manual dot projecting tool cannot be comparable with a Berlinlasers 650nm red laser diode module within 5mW to 100mW. After easy use of 5V, 9V 1000mA DC power supply, it leaves enough space for tube cooling down, but also assures constant red laser beam and red dot alignment at various work distances.Available with 16mm...