... BS4737: Insulated cables, PVC insulated for intruder alarm systems NEC 725/800: CM / CL2, BS4737: Insulated ... cable RVBSuitable for use in conduit and for fixed, protected installation of Wiring Burglar Alarm, Public Address Systems ... , Intercoms, Telephone Stations, Speakers, Instrumentation, Control and other Low Voltage Circuits that are Power-Limited and anti-interference needed Power cable ...