... operation and high-precision measurement under laboratory. SAT-F5 Optical Multimeter is handheld and intelligent multi-function measurement instrument ... integrating with LD source and optical power range module, SAT-F5 could provide light source ... , and the wavelength of light source :650nm ,850nm,1300nm, 1310nm, 1550nm, 1625nm, 1490nm. It is the best selection for ...