Professional grade quality components. For use with tile and stone. Innovative adhesive fiberglass mat system speeds up installation process. Pre-sized kits provide everything needed for installation. System includes the F802GFCI programmable 5/2 day or 7 day thermostat. The F802GFCI thermostat is design specifically for floor heating applications and has booth air and floor sensing modes and includes the floor sensor. The built-in Ground Fault Circuit Interrupter (GFCI) provides an essential safe guard against shock hazard and is a mandatory code requirement for kitchen and bath installations. The optional FCS11 Instant Alert Monitor gives you the peace of mind to know your Floor Heating Cable installation was done correctly the first time. During installation, the Instant Alert Monitor identifies potential problems instantly. The Monitor sounds an alarm if the Heating Wire is cut or damaged, allowing for easy repair BEFORE the mat is covered with Mortar and Tile. Kits available in multiple different square footage options. Emits zero EMF (electromagnetic fields). Factory support hotline and installation video and instructions are available. Twenty year limited warranty