... copper or tinned copper or CCA or CCS 3)2*0.5+6*0.22unshield Shielded/Unshielded Alarm Cable: 1> Conductor: Bare copper ... or tinned copper or CCA or CCS conductor are available 2 ... > Insulation: PVC-flame proof 3> Cable cores: 2, 4, 6, 8, 12,...,50 are ...