FC/PC-SM/MM-Diamond Features: 1. insert loss<0.20dB 2. repeatability :<0.10dB 3. changeability :<0.20dB 4. insert and pull frequency:>500 times 5. Working temperature: -40C - +85C 6. Storage temperature: -40C - +85C 7. Bell core TA-NWT-001209 Standard