{"product_id":"duplex-lc-upc-fiber-tester-loopback-plug-for-9-by","title":"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","description":"\u003cdiv\u003e2-Pack Duplex LC Loopback Fiber Tester for SM Cables\u003cbr\u003e\n✔️ Ceramic ferrules, IL ≤0.2dB, RL ≥50dB, blue housing \u003cp\u003eThis 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.\u003c\/p\u003e ✅ Standard duplex LC\/UPC connector for single-mode 9\/125 SM fiber, blue shell\u003cbr\u003e\n✅ Insertion loss ≤ 0.2 dB; return loss ≥ 50 dB; rated for 1000+ insertions\u003cbr\u003e\n✅ Ceramic ferrules for low loss and stable loopback performance\u003cbr\u003e\n✅ PEI shell provides insulation, heat resistance, and stable fit\u003cbr\u003e\n✅ Widely used in fiber optic sensors, connections, testing equipment, and distribution frames\u003cbr\u003e \u003cp\u003e💡 What is a fiber loopback tester used for in lab and field testing?\nFiber loopback testers are handy for quick validation of link health and device response.\n- Handy for validating fiber optic ports in racks and field setups\n- Useful for measuring insertion loss and return loss to confirm port health\n- Great for calibration and routine testing in labs and data centers\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":48014176518379,"sku":"VXB0F1K5RR72","price":49.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/61_DKKayAOL.jpg?v=1775258956","url":"https:\/\/vxb.com\/products\/duplex-lc-upc-fiber-tester-loopback-plug-for-9-by","provider":"VXB Bearings","version":"1.0","type":"link"}