Does the Latino II fan have to be installed with a wall switch or can it be operated just by remote control or wifi
The wall swich is hightly recommanded. This swich will protect your fan in the event of an overvoltage on the electrical mains, when the fan is switched off.
It can also work without it, but to do so you need to make sure that the electricity networks are stable, which is the case in large cities.
In islands or villages it is recommended to use a wall switch, for the Latino II but also for ALL DC fans.