You will find the installation instructions for your product in its packaging. Otherwise, they are available on the Smarther with Netatmo smart thermostat web catalog page. For more details on installation, you can watch the tutorial https://www.youtube.com/watch?v=FVZF83c2NWM&list=PLR4fOw5f1yqQE4-z0RLsAwy5SJK7x4u7s&index=2