Shop › Schluter Ditra Heat RS-1 Smart Thermostat Image 1 of 1 Schluter Ditra Heat RS-1 Smart Thermostat $357.73 Schluter’s smart thermostat for their Ditra Heat system. This thermostat is wifi-enabled. Quantity: Add To Cart Added! Schluter’s smart thermostat for their Ditra Heat system. This thermostat is wifi-enabled.