• Single-mode fiber optic adapter SC female to SC female APC, suitable for patch panels and boxes with rectangular cutouts. • Rectangular housing with coupling sleeve structure and APC polishing method, providing low fluctuation in insertion loss and high compression resistance. • Designed for panel mounting or free suspension, with dust caps to protect against debris. • Applications: fiber optic communication systems, access networks, data transmission, CATV, LAN, test equipment, enterprises, facilities, security, FTTH, FTTP, FTTA, and environments with high electromagnetic interference. • Package of 10 SC female to SC female APC simplex single-mode couplers. • Cable type: fiber optic. • Connector type: SC-SC. • Connector A: SC/APC female. • Connector B: SC/APC female. • Operating temperature: -25°C to 70°C. • Storage temperature: -40°C to 80°C. • Connection repeatability: up to 1000 times. • Interchangeability: ≤0.2 dB. • Insertion loss: ≤0.2 dB. • Return loss: ≥40 dB.