Features: This is a carrier-class mechanical flange fiber optic attenuator adapter. Low insert lost,high stability and long service life. Low accuracy attenuation of the adapter,less than +-0.5db. The insert core is ceramic type with a wavelength of 1310~1550nm. The attenuator can work normally between -40~+80. Specification:Item Type:Fiber AttenuatorAmbient Humidity: 95RHAccuracy Attenuation: ±0.5dbFerrule Type: CeramicWavelength Parameter: Single Mode 1310-1550nm Working Temperature: -40 ° C -80 ° CProduct Return Loss: 55dbStorage Temperature: -55 ° C -85 ° CPackage List:1 x Fiber Attenuator