The Schluter Ditra-Heat-E-RS1 is a smart thermostat designed for use with the Ditra-Heat floor warming system. This thermostat has third-party integration with popular voice and home assistants to include floor warming into your smart home capabilities. Ditra-Heat-E-RS1 can be used with either the 120 V or 240 V Ditra-Heat-E-HK heating cables. The smart thermostat has a sleek design with a mirror finish and can be programmed and controlled by using the Schluter Smart Thermostat app.. Compatible Floor Type: Laminate,Marble,Tile. Flooring Product Type: Floor Heating Thermostat. Indoor/Outdoor: Indoor. Installation Location: Basement,Bathroom,Kitchen. Product Weight (lb.): 1.19 lb. Returnable: 90-Day. Voltage (V): 120/240 V. Product Width (in.): 2.75 in. Flooring Product Type: Floor Heating Thermostat. Voltage (V): 120/240 V