The Netatmo Smart Thermostat can be controlled online using the Netatmo Energy app, either the web version (my.netatmo.com) or mobile version (iOS or Android) via Wi-Fi or 4G.
The Thermostat also has manual controls (+ and - buttons). Any setpoint applied from the Thermostat box activates a "Manual Boost" for a limited period of time which is configured by default at 3h. This period can be adjusted (in the app settings) between 5 min and 12h.
Once this time has been reached, the Thermostat will resume the mode applied before the activation of the Manual Boost, i.e. the weekly schedule or one of the special modes (Away, Frost-Guard, OFF or MAX).