FLBM-LC-SM-A Single Mode LC Fibre Loopback Module (9/125 OS2, UPC) The LC fibre Loopback is also known as an LC fibre loopback plug or loopback adapter. It is typically used for fiber optic testing applications, network restorations, and troubleshooting purposes. The OPTCORE™ single mode LC fibre loopback effectively tests the transmitter capability and receiver sensitivity of optical network components and systems. The loopback module features a compact design and is enclosed in a hard shell case for protection. Specification Fibre Type 9/125µm Single-mode Fibre Count 2-Fiber   Connector Type LC Duplex Polish UPC   Cable Length  Default Cable Diameter 2 mm   Insertion Loss ≤0.3dB Return Loss ≥50dB   Polarity Type B Durability ≥500 times   Jacket Material PVC Connector Colour Blue   Environment Operating: -20°C to 70°C Storage: -40°C to 85°C Application Telecom testing and troubleshooting Fiber labs FTTX testing