Features: This is a carrier-class mechanical flange fiber optic attenuator adapter. Less loss of insert, more stable and long service life. Low attenuation accuracy of the adapter, less than +-0.5db The insert core is ceramic type and the wavelength is 1310-1550nm. Attenuator operates normally between -40~+80℃. Specifications: Item Type: Fiber Attenuator Ambient Humidity: 95RH Precision Attenuation: ≤±0.5db Ferrule Type: Ceramic Wavelength Parameter: Single Mode 1310-1550nm Operating Temperature: -40°C -80°C Product Return Loss : ≥55db Storage Temperature: -55°C -85°C Package List: 1 x Fiber Attenuation Vessel