... Optic4. Optical fiber sensorsSpecifications TypeBD503ABD503BWavelength(nm)800~1650DetectorInGaAsOptical ConnectorFC SC ST/ Universal 2.5mm adapter (LC,MU can be optional )Measurement Range ... informationStandard Accessories: ItemsMain machine, FC,SC,ST interchangeable connector ,battery, carry bag, user’s guide. Optical Power Meter,Fiber Power Meter,Optical Power Detector