25 Square Foot SunTouch WarmWire 3.0 KIT With TOUCH SCREEN Programmable Thermostat Contains One 25 SF Spool, 500850 Thermostat plus accessories WarmWire cable is thin, durable, and energy efficient. (Input: 120V, Output: 12W/SqFt, 41 BTUs) Heats 25 square feet (Contains a 98 ft spool with 10 ft armored power lead) Installs easily with complete design freedom for going around turns, fixtures, and obstructions. Kit includes cable, touchscreen programmable thermostat, floor sensor, and install accessories.