... ,4C,6C,8C,Copper or CCA conductor 4.fire alarm Shielded/Unshielded Alarm Cable: 1> Conductor: TC or copper-clad aluminum or ... copper-clad steel 2> Insulation:PVC-flame proof 3> Cable core: 2C, 4, 6, 8, 12,50C are available 4 ... , 300m/wooden spool 9> Application: used for alarm mechanisms or security system Alarm Cable White Shielded 100m reel