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.
You can make your home even more comfortable by automating Geofencing and Open Window Detection with the Auto-Assist Skill.* The Auto-Assist Skill is available in the app for only US$2.99 per month, and can be cancelled at anytime.
These two Skills also work without Auto-Assist. You will simply be notified via push notifications to (de)activate the heating if the Skills are triggered.
The Extension Kit allows you to use your Smart Thermostat with heating systems that don’t have a thermostat or have a wireless thermostat.