Features and Specifications Insertion Loss: PC ≤0.3dB UPC ≤0.2dB APC≤0.2dB MM≤0.3Db Return Loss: PC ≥45dB UPC ≥50dB APC≥60dB MM≥35dB Repeatability: ≤0.2dB Changeability: ≤0.2dB Operating Temperature: -30----+75 Storage Temperature ： -40----+85