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