Applications:Plenum Thermostat Cable is primarily used in plenums without conduit for applications such as power limited circuits such as thermostats, air conditioning, heat pumps, bell and alarm systems, signals systems, door bells and remote control units where the voltage does not exceed 30 volts. Temperature rating is 20°C to +60°C. Standards:UL 13, CL2P UL 1581 NEC Article 725 Conductors:Plenum Thermostat Cable has a solid soft drawn copper, per ASTM. B-3. Insulation:Plenum Thermostat Cable has a heat and moisture resistant colored low smoke polyvinyl chloride PVC insulation. Jacket:Plenum Thermostat Cable has an outer jacket of low smoke polyvinyl chloride PVC, which is heat and moisture resistant. Specifications*: Size: 18 AWGNumber of Conductors: 2Plenum: YesConductor Strand: Solid Soft Drawn CopperInsulation Thickness: 0.007 inchesOutside Diameter: 0.138 inchesWeight per foot: 0.016 lbs *Data provided on this page is subject to change based on different manufacturers' variances** Images are provided for reference only and may not reflect exact product specifications. Please consult the Product Technical Details for accurate information.