With multi-room control & the new heating algorithm, tado° can save even more on your heating costs & make life more comfortable. An enhanced interface on the thermostat itself & the new Smart Schedules in the app make control of your heating even easier. The tado° Smart Thermostat uses your phone’s location to control your heating, ensuring no energy is wasted. The smartphone app gives you full control over your heating wherever you are. Experience more comfort while saving up to 31% of your heating costs. Control your heating from anywhere with the tado° app on your phone, & have a clear overview of your climate history & savings. Reduce your energy consumption, save money, & enjoy the perfect room temperature at all times with help from intelligent Skills: Geofencing, Open Window Detection, & Weather Adaptation. Auto-Assist: For even more comfort you can automate Geofencing & Open Window Detection (available in-app, $/£2.99/month, $/£24.99/year, cancel anytime). Smart Home integration & voice control for your heating with Amazon Alexa, Apple Home Kit, Google Assistant, & IFTTT. For homes with an existing wired thermostat on a combi boiler (i.e. no hot water tank). tado° is compatible with 95% of heating systems. Integrations The new product suite offers several integration possibilities, such as Apple Home Kit, Google Home, Amazon Echo, & IFTTT. Make tado° part of your connected home & create scenes with Apple Home Kit. Use Siri, Google Assistant or Amazon Echo to voice control your heating & create Applets with IFTTT to connect with other applications & smart devices. The Extension Kit enables you to control your hot water. It is also needed to connect the tado° Smart Thermostat to your heating system if there is no room thermostat or if you have a wireless room thermostat. The Extension Kit works then as a wireless receiver for the heating system. Replaces a hot water controlling programmer. Controls heating based on sensor data from the tado Smart Thermostat. Needed as wireless receiver in case you exchange a wireless room thermostat or for heating system setups without a room thermostat. Compatible with the UK standard programmer backplate.