... copper or tinned copper or CCA or CCS 3)2*0.5+6*0.22unshield Shielded/Unshielded Alarm Cable: 1> Conductor: Bare ... > Insulation: PVC-flame proof 3> Cable cores: 2, 4, 6, 8, 12,...,50 are available 4> Shield: Al/polyester foil ... 5> Rip cord: synthetic fibers 6> Drain wire: CU/TC/CCA7> Jacked: PVC-flame proof ... @20°C 16Ohms/1M Nom. Security Alarm cable (2*0.5+6*0.22 unshield)