... optic project and maintenance OBox RS6201 series Handheld Optical Power Meter are versatile power measurement instruments. RS6201 can offers eight ... include the following three types of Optical Power Meter, which divided by different measuring range.TypeRS6201ARS6201BRS6201CDetectorSiliconInGaAsWavelengths650,780,850,980,1060nm850,980, ... ×78×38 mm (Not include holster)Weight400g Optical Power Meter