Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/roll for smoke detector ... telecom system Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/rollspecification:Inner conductor:7 strands ... 100m per spool or as your request.Opion: Solid conductor, FR sheath, other sheath color are ... demand. Cat 3 Alarm-Security Cable, Solid, Shielded, 22AWG, 2 Conductor, 100m/roll