3 HT210Z-12S is a high-performance 12-core single-mode outdoor fiber optic cable designed for long-distance, high-speed data transmission. RFS is certificated against ISO 9001 and ISO 14001. ) *Exact product code is subject to the cable length. With a length of 1000 meters, this central tube armored cable is engineered for outdoor environments, offering flame retardant properties. The cable structure consists of single-mode or multi-mode optical fibers in a loose tube made of high modulus polyester material, filled with waterproof compound. Aramid yarns are placed outside the loose tube as the strength member, then a sheath with grooves is.