Sell optical laser source

Description

Optical laser source:
1. Wavelength: ***0nm, ***0nm, ***0/***0nm, **0/***0/***0nm, **0/***0/***0nm, etc.
2. LCD display
3.optical identifying distance: 5km, *0/*5km optional(**0nm)
4. Dimension: **0**2**8mm
5.high sensitivity and reliabilities;
6.optical transmission system, attenuation and fiber testing;
7.high accurate measurement used in the laboratory and field;
8.be compatible with other optical instruments;
9.low battery alarm