FCC stands for Federal Communications Commission. The FCC certification or FCC mark is a certification mark employed on all electronic products manufactured and sold in the United States. The FCC enforces this requirement, per Title 47 of the Code of Federal Regulation (CFR)
All electronic products emit radiation, and hence FCC testing and certification mark ensure that the electromagnetic interference from a device is under the approved limit by the Federal Communications Commission.
Electrical products that require authorisation can be either intentional or unintentional radiators of radiofrequency energy. Intentional radiators are the devices that need to emit radio energy as a part of their operation like mobile phones. While unintentional radiators are devices that radiate energies as an unintentional byproduct of their operations like a digital camera.