Best Price 405nm 20mW 3.0-3.7V Violet-blue Dot Laser Diode Module High Quality
The 20mW blue-violet ray laser module is an electronic component for Lab, Industrial, DIY use. This module is a component we used to produce a 405nm laser. 1 x 405nm 20mw Violet/Purple Laser Dot Module 13x42mm 3-5.5VDC.