WarmlyYours TempZone Roll installs underneath ceramic tile, natural stone, hardwood, wood, and other popular flooring materials, giving homeowners radiant in-floor heating that's truly luxurious. The Flex Roll consist of a heating cable secured onto a green mesh fabric, and the heating cable is distributed in serpentine loops. The cable loops are 3 in. apart, which helps deliver even heating throughout flooring areas, never leaving cold spots in the room. This kit also includes a Circuit Check electrical continuity alarm which can alert you if the heating elements are damaged during installation and a programmable floor heating thermostat. Due to its Wi-Fi capabilities, this programmable thermostat, with built-in self-testing GFCI, allows you to control your floor heating system with your smartphone or on the web. If you have a busy schedule, the nSpire Touch Wi-Fi's ability to be controlled remotely can translate into huge energy savings without sacrificing comfort or convenience. With its crystal-clear 3.5 in. full color touchscreen display, the dual voltage (120-Volt/240-Volt) nSpire Touch Wi-Fi is as easy to operate as it is to look at. This model provides maximum control over the floor temperature with 6 programmable events for each day of the week. Also includes floor sensor.