Proceeding flame retardant and fire-resistant test, LOI of ceramic sheathing materials and temperature index of cable according to EN ISO 4589 are up respectively to 40% and 370°C. Optical cables for sensing and monitoring temperature, vibration or intrusion. Sensing & Monitoring Solutions based in Optical Fibre We have product quality certificates UL, BUREAU VERITAS and DNV, and other approvals of. einforced Plastic (FRP) armouring. The design is reional during fire. Testing shall be in accordance with FOTP-3. The cable is halogen-free and flame retardant, to protect against secondary damage to electronic equipment during and after the fire.