... Handheld laser llight source--SX203 It can work at 1625nm, 1550nm, 1490nm, 1310nm, 1300nm, 850nm,650nm, you can choose any wave Optical laser light Source ... SX203 Description: SX203 series of high stability of the laser light source is a ... , 1KHZ, 2KHZ). It is widely used in optical communication, optical measurement, optical fiber sensing, and so on. Features: 1. ...