40 Sqft Cable Set, Electric Radiant Floor Heat Heating System with Aube Digital Floor Sensing Thermostat 40 Square Foot Under Tile Heating "Cable Set" (spool of wire), 120 Volts Highest Quality Heating Cable, Twisted Pair for Zero EMF, Single Cold Lead, Very Thin, 1/8" thk Wire is laid out 3" apart acroos the area to heat. Allows easy heating of odd shapes Includes Honeywell/Aube Digital Floor Sensing Thermostat with Floor Sensor Wire(model TH115-AF-120S) Includes Aluminum tape to secure wire to floor. UL LISTED for USA and Canada.