Installation of my connected product

• How do I install my Smarther with Netatmo connected thermostat?
• What are the prerequisites before starting the installation of your Smarther with Netatmo connected thermostat?
• Where can I find the Smarther with Netatmo connected thermostat serial number?
• Where do I find the installation instructions for my Smarther with Netatmo connected thermostat?
• How many Smarther with Netatmo connected thermostat and Netatmo Smart Radiator Valves can I control in the same installation?
• I changed my Internet router code, or changed my router; how do I reconfigure the Wi-Fi of my Smarther with Netatmo connected thermostat?
• With what types of Wi-Fi networks can the Smarther with Netatmo connected thermostat be configured?