Southwire 500 ft. 18/2 Solid Copper Thermostat WireThe Southwire 500 feet brown 18 2 thermostat and bell cable is rated to 150 volt and is classified as class 2 power limited circuit cable. This thermostat and bell cable offers solid copper conductors with PVC insulation. This thermostat wire is also sunlight resistant. UPC: 032886855320 Manufacturer Part No: 64162144 Brand Name: Southwire Gauge Conductors: 18 2 Wire Length: 500 ft. Stranded or Solid: Solid Product Type: Thermostat Wire Cable or Wire