2C,4C,6C Shielded/ Unshielded security control alarm cable for smoke detector for intruder alarm systems.BU, Tinned conductor. ... 2C,4C,6C Shielded/ Unshielded security control alarm cablespecification:Inner conductor ... are available on demand. 2C,4C,6C Shielded/ Unshielded security control alarm cable