... tinned copper or CCA or CCS 3)2*0.5+6*0.22unshield Shielded/Unshielded Alarm Cable: 1> Conductor: Bare copper or tinned copper ... conductor are available 2> Insulation: PVC-flame proof 3> Cable cores: 2, 4, 6, 8, 12,...,50 are available 4> Shield: Al/polyester foil 5> Rip cord ...