Optimized for OS2 single mode fiber, this LC fiber keystone mpdule adapter features angled physical contact (APC) connectors to minimize back reflection, ensuring signal integrity in high-precision telecom, CATV, and FTTH systems. The green housing provides clear APC identification to avoid mismatched connections. High-quality ceramic sleeves maintain precise alignment for low insertion loss and durability. The duplex design supports simultaneous bidirectional communication, enhancing network throughput. Compatible with industry-standard keystone panels and faceplates, it facilitates easy installation and management. Ideal for long-distance, high-bandwidth applications, this adapter provides reliable and stable optical connections. Each pack contains 10 adapters, suitable for large-scale deployments requiring consistent, high-quality performance.