The Schluter Ditra Heat E RT6 Smart Thermostat is a technologically advanced thermostat designed for underfloor heating systems. It features Wi-Fi and voice control capabilities, allowing users to easily adjust the temperature using their voice or a connected device. The thermostat has a 2-inch display screen, a white colour scheme, and operates on 230V power source. Additionally, it is programmable and compatible with Google Assistant or Amazon Alexa for added convenience in controlling the heating system. I had 3 left over from a job so are brand new and never been installed.