Wireless communications are susceptible to interference; this may impact the reliability of a point to point communication link. Thread is developed to run on IEEE® 802.15.4 chipsets which operate in the 2.4GHz ISM band. This frequency is shared between multiple technologies such as Wi-Fi®, Bluetooth®, cordless phones, and microwave ovens, which may result in some interference, depending on the medium usage from each technology. The tests performed involve minimal Wi-Fi interference. The bottom figure here is a Wi-Fi scan performed where the tests took place. The tests were performed under Channel 11, which was mostly used to report results from each cluster to the Central Server after each Thread test (Channel 23) was finished.

