Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/roll for smoke detector for intruder alarm/ ... telecom system Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/rollspecification:Inner conductor:7 strands 0.2mm ... available on demand. Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/roll