Security alarm cable 4 cores unshield 1) Conductor: TC, BC. CCA,TCCA 2) Cores: 2-20cores 3) Dielectric: PE, PVC, ... cores unshield Alarm Cable / Security Cable / Control Cable1,Conductor Materials:BC: Bare Copper ;TC: Tinned Copper ;CCA: Copper Clad Aluminium CCS ... : Copper Clad Steel;2, Structure 1) Cent Conductor: TC, BC. 2) Cores: 2-24 pairs3) Dielectric: PE, PVC, PP. 4 ...