4 cores shield alarm cable 1) Conductor: TC, BC. CCA,TCCA 2) Cores: 2-20cores 3) Dielectric: PE, PVC, PP. 4 cores shield alarm cable 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: 2-20cores3) Dielectric: PE, PVC, PP. 4) Shield: Al Foil3, ...