The term "2.4 GHz" refers to a specific frequency band used for wireless communication. It is commonly utilized in devices such as Wi-Fi routers, Bluetooth devices, and microwave ovens. This frequency allows for a good balance between range and data transmission speed, making it popular for home and office networks. However, the 2.4 GHz band can be crowded, as many devices operate within this range. This can lead to interference and reduced performance, especially in areas with many competing signals. To mitigate this, some devices also use the 5 GHz band, which offers less congestion and higher speeds.