If users are trying to make highly clear and accurate dot measurement for all night version fields, not relying on any manual dot projecting tool, it makes even better job with a long wavelength made Berlinlasers 980nm infrared laser diode module. It projects invisible infrared laser beam directly from a 980nm infrared laser diode module within 100mW to 500mW. 
Under operation with a night version device and constant power source, this infrared dot laser keeps work with constant infrared laser beam and infrared dot emission from laser beam aperture. It gets no barrier of long distance, high height and other complex working environments etc. After its freely adjusted laser beam focus and IR dot emitting direction, this infrared laser module assures the lowest price and the most stable dot generation for all night version precise dot alignment work perfectly.