... attenuation valuePrecise control of attenuation range Simple manipulationConnector type: FC, SC, ST, LC or other typeMaterial:Housing Material: ... sensor Testing equipmentItemUnitParameterOperating WavelengthNm1310/1550Attenuation RangedB1-10dB(1dB step), 15, 20, 25, 30dBReturn LossdBPC:≥50 UPC: ≥55 APC: ≥ ... 40°C~+ 85°C Fixed LC optical fiber attenuator,FC pc 7db 3db 5db 10db 15db 20db fixed optical ...