A lot of WiFi systems use radio signals in “bands” at 2.4 GHz and/or 5 GHz. WiFi-enabled devices usually operate in one or both of these bands. Most newer devices can operate in both. WiFiRanger products operate in both bands. Your devices that support WiFI connectivity on those frequencies will be able to connect to the WiFiRanger that utilizes the most common modern encryption methodology known as WPA2. The number of devices that can connect to a WiFiRanger at the same time is 250 which is more than most people have around their homes.