... for installation in signaling and security system 2)Bare copper or tinned copper or CCA or CCS 3)2*0.5+6*0.22unshield Shielded ... or CCA or CCS 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: synthetic ...