In various precise dot measuring work fields, in order to get clear and quick response dot alignment, it makes efficient job with a Berlinlasers 532nm green dot laser module. It emits highly visible green laser light from a middle wavelength of 532nm green DPSS laser system. When it gets less than 1mrad laser beam divergence, without the use of sunlight, a correct output power made green laser always makes sure of highly precise and clear dot alignment at various work distances constantly. This 532nm green dot laser module makes advanced use of a glass coated lens. It gets strict laser beam stability test and aging preventing test. When it is operating by skilled users, after constant dot alignment within 8 to 10 hours, it is performing well with high quality and high brightness green laser light emission. It is also projecting highly clear green dot in continuous use. According to real work distance and light occasion, after its correct use of output power and proper mounting onto industrial machine or device, within freely installed distance of 3 meters, this green laser assures no barrier and no mistake dot alignment in long time use perfectly. Technical data: Item: Berlinlasers green dot laser modules Output power: 5mW to 100mW Laser class: IIIa, IIIb Power source: 5V 9V 1000mA DC power supply Applications: laser marking machine, laser engraving machine, drilling system and lab experiment etc