... Optical Power Multi Meter is the one combining functions of laser source and optical power meter. It can realize the absolute ... , CATV system, lab project development, etc. Main FunctionsAs laser source and optical power meter Absolute and relative power testSingle end ... 140 (only optical power meter) ≥70 (optical power meter & laser source)Low voltage warning≤3.4V ST801 Optical Power Meter ...