What is the difference between the Wi-Fi controller and the Wi-Fi terminal ?

The Wi-Fi controller and the Wi-Fi terminal are two different components with specific fonctions. The Wi-Fi controller is the source of the Wi-Fi stream in your establishment. In other words, without a Wi-Fi controller, no Wi-Fi connection would be possible. The Wi-Fi controller is however not sufficient. It is imperative to also install a Wi-Fi terminals or AP (Access Point). The number of Wi-Fi terminals to be installed will depend on the size of your establishment and the number of connected people (huge hotel with many rooms or small coffeeshop). These Wi-Fi terminals will relay the Wi-Fi stream and allow users to be connected to Wi-Fi everywhere.