18/2 AWG Red FPLR Riser-Rated Fire Alarm Cable - CL3R/FT4/CMR Multi-Certified 300V Solid Copper Wire:This professional-grade fire alarm cable features 100% solid bare copper conductors with superior conductivity compared to copper-clad aluminum wires. UL/ETL dual-certified with FPLR/CL3R/FT4/CMR multiple flame-retardant ratings, it's specifically designed for low-voltage security systems in both indoor and outdoor applications. The UV-resistant jacket withstands harsh outdoor conditions while meeting strict commercial building vertical riser wiring requirements (NFPA 70 compliant).The unshielded flexible design is perfect for smoke detectors, burglar alarms, emergency broadcast systems and more. With 300-Volt CL3 power-limited design capable of handling 300-Watt surges, it's the ideal choice for fire alarm systems, security control panels, and voice evacuation systems in hospitals, schools, and commercial complexes. The smooth round jacket with rip cord facilitates easy installation in conduits and corners, while pure copper conductors ensure stable communication for addressable systems. Multiple flame-retardant certifications provide safety performance far exceeding standard CM cables.