SHUNLIDAMAI 10Pack SC Fiber Optic Coupler Singlemode Keystone Jack for Patch Panels and Wall Plates Fiber Optic Cable Adapter (Grass Green，Angled Physical Contact)

["【Complete Package】 Includes 5 pieces of SC female to SC female APC simplex single mode fiber optical couplers, ready for immediate use in patching and connection setups.","【Durable Ferrule Material】 Equipped with high-density zirconia ceramic ferrules with excellent heat and acid resistance, ensuring long-term reliability.","【Reliable Fiber Connection】 Designed to connect two single mode SC/APC fiber patch cords with stable insertion loss (≤0.2dB) and high return loss (≥50dB), maintaining signal quality during repeated use.","【Precision and Repeatability】 Engineered for over 1000 cycles of repeated connections with consistent performance and interchangeability (≤0.2dB), suitable for patch panels and structured cabling systems.","【Wide Range of Applications】 Ideal for optical communication systems, fiber optic broadband networks, CATV, optical instruments, and fiber optic sensors, supporting professional installation and maintenance tasks."]