PL532-10 is designed to replace the He-Ne laser. It's an ideal tool as guide beam and pointer. AC90~260V input make it adapted to any voltage over the world. It can even be driven by battery if no AC power available; Much more rugged and compact than He-Ne laser inherited from DPSS scheme; Brighter than He-Ne because eyes are more sentitive to green than red light. At last Pantotek can give you an unbeatable price with our own crystal and optics parts.