The mode is recommended or suitable for use during day time.
The device is optimizing for lower energy usage in this mode. Sometimes called "Eco mode".
Either the mode is inherently low noise or the device optimizes for that.
The mode uses the highest available setting value.
The mode uses the lowest available setting value.
The mode is recommended or suitable for use during night time.
The mode of the device is optimizing for faster completion.
The device is silent or barely audible while in this mode.
A mode suitable for use during vacations or other extended absences.
The device decides which options, features and setting values to use.