... CATV system, lab project development, etc.Main FunctionsAs laser source and optical power meterAbsolute and relative power testSingle ... display9. Small size, simple operationTechnical Specifications Optical power meter module parametersWavelength range (nm)800~1600--1310, 1550, 1625 ... optical power meter) ≥70 (optical power meter & laser source)Low voltage warning≤3.4V ST801 Optical Power Multimeter ...