Fire Alarm Cable, Unshielded, 30 V, 3 Conductors, Solid Bare Copper Conductor, 18 AWG Conductor, 0.232 in Outside Dia, PVC Insulation, 0.033 in Insulation Thickness, PVC, -20 to 60 deg C, Standards/Approvals: cCSAus Certified, Applications: For low voltage thermostat in HVAC systems