Duplex LC UPC Fiber Tester Loopback Plug For 9 By 125 Micron Singlemode Fiber Optic Cables Signal Test Adapter For Testing Applications 2 Pack Pro Grade Lab And Field Network Testing

2-Pack Duplex LC Loopback Fiber Tester for SM Cables
✔️ Ceramic ferrules, IL ≤0.2dB, RL ≥50dB, blue housing

This duplex LC/UPC loopback fiber tester is a plug-in module designed to validate fiber optic ports and signal paths. It’s widely used in labs, data centers, and field setups to confirm link integrity and loopback reliability.

✅ Standard duplex LC/UPC connector for single-mode 9/125 SM fiber, blue shell
✅ Insertion loss ≤ 0.2 dB; return loss ≥ 50 dB; rated for 1000+ insertions
✅ Ceramic ferrules for low loss and stable loopback performance
✅ PEI shell provides insulation, heat resistance, and stable fit
✅ Widely used in fiber optic sensors, connections, testing equipment, and distribution frames

💡 What is a fiber loopback tester used for in lab and field testing? Fiber loopback testers are handy for quick validation of link health and device response. - Handy for validating fiber optic ports in racks and field setups - Useful for measuring insertion loss and return loss to confirm port health - Great for calibration and routine testing in labs and data centers