Conductor: 22 thru 12 AWG fully annealed solid bare copper per ASTM B3 Insulation: Premium-grade, coIor-coded PVC Jacket: Premium-grade PVC, red, suitable for use from -20.C to +105.C, round constructions have sequential footage markings to facilitate installation, includes ripcord on round constructions Applications: Wiring of fire alarms, smoke detectors, voice communications, burglar alarms, fire protective circuits, suggested voltage rating: 300 volts Compliances: NEC Article 760 Type FPLR (UL: 105.C, 300 V), NEC Article 725 Type CL3R (UL: 105.C, 300 V), NEC Article 800 Type CMR (UL: 105.C, 300 V), suitable for use in the State of California, RoHS Compliant Directive 2015/863/EU (RoHS3)