In process of continuous dot, line or cross line alignment work, laser modules should be designed with high attention to thermal stabilization part. Battery power laser modules are seriously limited by its thermal emitting, but also spending extra time on battery change. In order to obtain even more stable alignment in multiple working occasions, factory workers and engineers would prefer to choose DC input power supply laser pointers. Designed with high temperature and strong corrosion resistance electric wires extension, Berlinlasers laser devices provides high level of accuracy and stability measurements.