The adoption of external DC input power supply is a key point of this green laser diode module. Not the same as a very small size green laser pointer pen powered by alkaline battery, the use of green laser module has. K need to change battery A laser pointer powered by two pieces of new alkaline battery can support about 180 minutes dot positioning, thus it would have to stop work to change battery.
According to the equipment of 3v or 4.2v DC input power supply, green laser diode module gets the maximum output power of 100mw, while it is still efficient enough to gain highly bright and visible green laser dot on all targeting surfaces. Fog the most important of all, during the whole process of laser dot alignment work, users have no need to stop work of this laser diode module, it is just able to work continuously within 8 hours to 10 hours a day. Even though this green laser alignment is supporting 2; hours a day continuous laser dot targeting, however, it might cause serious bout to laser crystal patty and electric drive circuit board, thus increase the process of laser module burning out or damage.
When green laser diode module gets super good use of laser dot alignment within acceptable time, it is just getting super nice laser light cycling use in practical dot measurement work. Green alignment laser dot has just kept its high beam visibility, only after it's correct installation and adjustment of laser beam focus, it can easily high accuracy dot measurement precisely.