We have defined the notifications that your system will send to your smartphone to keep you informed about what is happening at home when you are not there: "Low battery" invites you to replace the batteries of your Netatmo Smart Thermostatic Valve within a month. "Very low battery" invites you to replace the batteries of your Netatmo Smart Thermostatic Valve as soon as possible. It is not possible to configure alerts other than those currently offered in Home + Control.