Device, system, and method of dynamically configuring a Sub-1 Gigahertz reception module via a Wi-Fi communication link. For example, a ceiling fan includes rotatable blades, an electric motor to rotate them, and a fan controller to control activation and deactivation and rotation speed of the electric motor. The ceiling fan further includes a non-Wi-Fi wireless receiver unit, such as a Sub-1 Gigahertz wireless receiver unit, to receive incoming non-Wi-Fi signals indicating control commands to the ceiling fan which is associated with an existing Fan Address Code. The ceiling fan also includes a Wi-Fi wireless receiver unit, to receive an incoming Wi-Fi message indicating a replacement Fan Address Code. The ceiling fan includes a Fan Address Code Modification Unit, to replace (i) the existing Fan Access Code of the ceiling fan, with (ii) a replacement Fan Access Code that was received via the incoming Wi-Fi message.