Part 15 regulates unlicensed devices, such as Wi-Fi routers and Bluetooth transmitters, to prevent interference with licensed services. It includes technical standards for intentional and unintentional radiators, with power limits for devices in bands like 2.4 GHz and 5 GHz. Wi-Fi's output power is limited to 1 watt in certain U-NII bands. To ensure compliance, devices must undergo testing and meet specific emission thresholds.

47 CFR Part 15 governs the operation of unlicensed RF devices in the U.S., including Wi-Fi, and other consumer electronics. It specifies technical standards, power limits, and interference rules to ensure that these devices do not disrupt licensed services. Devices operating under Part 15 must not cause harmful interference and must accept any interference received (47 CFR Part 15.5). Compliance includes emission limits, certification, and labeling requirements.