conductor: 7 x 0.20mm tinned copper shielded or unshielded 4c, 6c, 8c, 10c, 12c, 14c and 20c security alarm cables conductor: 0.6mm or 7 x 0.20mm plain annealed copper wire insulation: pvc flame retardant o. d. 1.0mm+/-0.05mm assembling: helicoidal under polyester tape shield: 7 x 0.20mm or 0.5mm copper drain wire, overall aluminium/polyester foil >100% coverage rip cord: red synthetic fibre outer jacket: pvc flame retardant in white with thickness of 0.7mm packing: 100m/box, or 100m/plastic spool, or 300m/wooden spool applications: wiring burglar & security alarms, public address systems, intercoms, telephone stations, speakers, instrumentation, control and other low voltage circuits that are power limited.