Product Name: Broadband BoxesModel Number: KDFWPlace of Origin: ChinaUsage and properties: 1) Used in the broad band access network to the building, housing and uptown 2) Can be assembled with different types or sizes of fiber optic converters and fast Ethernet exchanger 3) Can be equipped with temperature controller and fan Environment: 1) Environmental temperature: -25°C ~ +60°C 2) Relative humidity: 3) Atmospheric pressure: 70 - 106KPa Main technical indexes: 1) Insertion loss: 1.31, 1.55um LD lamp-house, SM≤0.18dB, MM≤0.30dB 2) Return loss: 1.31, 1.55um LD lamp-house, SM PC≥45dB, UPC≥50dB, APC≥60dB 3) Insulation resistance: ≥2 x 104mΩ/500V DC 4) Voltage-resistance strength: non-puncture, no arc-over under 3kV DC/1min