As previously mentioned, Wi-Fi operates on the 2.4 GHz and 5 GHz bands. The 2.4 GHz band is an unlicensed frequency range with 3 non-overlapping channels allocated for industrial, scientific, and medical applications. Although in practice, the band can be used by products falling outside of these three categories such as consumer electronics. Products based on 802.11 b, g, or n operate on this band. It can be considered the default band for consumer applications such as microwaves, baby monitors, cordless phones, and many other devices that can be found in a typical home. With all these devices operating on the same band, it can get quite crowded and interference can be a problem as devices compete for space.