QIANRENON LC Singlemode Fibre Optic Loopback Adapter SM 9/125μm LC/UPC Fibre Optic Patchcord Looper Coupler LC Duplex Fibre Optic Test Plug，for Fibre Optic Network Fibre Optic Cable Testing

Description

🔌 Plug into precision. Test with confidence.

The QIANRENON LC Singlemode Fibre Optic Loopback Adapter is a high-performance LC/UPC duplex coupler designed for fibre optic testing and network restoration. Featuring a 9/125μm singlemode fibre core optimized for 1310nm and 1550nm wavelengths, it ensures ultra-low insertion loss (≤0.2dB) and high return loss (≥60dB). Built with a durable zirconia ceramic core, it operates reliably across a wide temperature range, making it an essential tool for telecom, FTTX, CATV, and fibre optic lab applications.