1.Shielded or Unshielded 2.More than 10 years OEM&ODM 3.2C,4C, ... ,20C 4.Copper,CCA or CCS 5.ISO,UL,CE, Unshielded/ shielded Alarm Cable , Specifications:1.) Conductor: bare copper or tinned ... .2230x7/0.201.18.9Screened40x0.2240x7/0.201.110.8 Unshielded/ shielded Alarm Cable