If users are getting serious need of highly clear and accurate dot alignment, not relying on any manual labor force input, it would be an efficient job to make use of a 515nm green laser diode module. It keeps work with constant forest green laser beam and green reference dot projection directly from a 515nm green laser diode within 5mW to 50mW. It gets high thermal consumption, only after its correct use of 5V, 9V 1000mA AC/DC adapter, being made with metal heat sink cooling system and APC, ACC driving circuit board, this green dot laser is working well with the most reliable and stable green dot projection within the maximum work distance of 25 meters. Any time it makes correct use of output power, within long lasting work time of 8 to 10 hours, this 515nm green laser module assures high precision and high stability dot alignment for laser marking, laser engraving, drilling system, lab experiment and high tech work etc.