No, a remote-controlled ceiling fan does not necessarily require a wall switch. In fact, remote-controlled ceiling fans are designed to be operated primarily using the remote control, which eliminates the need for a wall switch to control the fan's functions.
The remote control allows you to adjust the fan's speed, turn it on or off, and sometimes control additional features such as the fan's direction or light settings. Some remote controls even offer programmable options, timers, or fan speed presets.
However, it's important to note that the installation of the ceiling fan should be done according to the manufacturer's instructions. In some cases, the fan may still require a wall switch for power control and to turn the fan on/off manually if the remote control is not available or batteries are depleted. The wall switch would be used to provide electricity to the fan, and the remote control would handle the fan's operational functions.
If you're planning to install a remote-controlled ceiling fan, it's recommended to consult the fan's instruction manual or consult a professional electrician to ensure proper installation and wiring for your specific fan model.