Schluter-DITRA-HEAT-E-HK are twisted pair heating cables designed for integration with the DITRA-HEAT uncoupling membrane in interior floor warming applications. Cables snap into the membrane; clips and fasteners are not required. No self-levelers required to encapsulate the cables; installation time significantly reduced. No return to thermostat required. Produces virtually zero electromagnetic fields. 120 V and 240 V options available in a variety of lengths.