Available in both multimode (OM3/OM4) and singlemode (OS2) variants, they support configurations from 4 to 24 cores in a durable central loose tube design. Meeting stringent international standards, these cables are tested for both fire resistance (IEC 60331-25) and flame. Lifeline® QFCI is the first UL flame listed optical cable designed for indoor/outdoor use in vital communication and emergency systems that need to be operational during fire. It eliminates the need f OM4) starting from 2 all the way to 48 fibers. Certified to B2ca CPR and FE180 fire-resistance standards, these cables maintain optical integrity under extreme. FireTuf fibre optic cables are manufactured by Prysmian Draka.