... ,20C 4.Copper,CCA or CCS 5.ISO,UL,CE, High Quality Alarm Cables , Specifications:1.) Conductor: bare copper or tinned copper ... , 14,16,18,206.) Used for alarm mechanisms or security system Standards: BS4737 BS6360 BS6746 Nom.DC Resistance per Conductor@206 ... .2230x7/0.201.18.9Screened40x0.2240x7/0.201.110.8 High Quality Alarm Cables