The Federal Communications Commission was created by the Communications Act of 1934. The Federal Communications Commission regulates interstate and international communications by radio, television, wire, satellite, and cable in all 50 states, the District of Columbia and U.S. territories. An independent U.S. government agency overseen by Congress, the Commission is the federal agency responsible for implementing and enforcing America’s communications law and regulations.

CERTIFICATION (47 CFR Section 2.907)
Certification is the most rigorous approval process for RF Devices with the greatest potential to cause harmful interference to radio services.
It is an equipment authorization issued by an FCC-recognized Telecommunication Certification Body (TCB) based on an evaluation of the supporting documentation and test data submitted by the responsible party (e.g., the manufacturer or importer) to the TCB. Testing is performed by an FCC-recognized accredited testing laboratory.
Information including the technical parameters and descriptive information for all certified equipment is posted on a Commission-maintained public database. In addition, equipment subject to approval using the Supplier’s Declaration of Conformity (SDoC) procedure can optionally use the Certification procedure

Supplier’s Declaration of Conformity (SDoC) is a procedure that requires the party responsible for compliance ensure that the equipment complies with the appropriate technical standards.
The responsible party, who must be located in the United States, is not required to file an equipment authorization application with the Commission or a TCB. Equipment authorized under the SDoC procedure is not listed in a Commission database.
However, the responsible party or any other party marketing the equipment must provide a test report and other information demonstrating compliance with the rules upon request by the Commission.
The responsible party has the option to use the certification procedure in place of the SDoC procedure.

The procedure that is applicable for equipment authorization, depends on the applicable FCC rule part(s) that apply to the radio frequency functions.
Except when otherwise stated in a rule, an intentional radiator (transmitter) is required to be approved using the certification procedure.
Unintentional radiators (digital circuitry) are approved using the SDoC procedure.
Today for example, devices such as mobile phones; wireless local area networking equipment, notebook computers, and tablet computers are a combination of radio transmitters requiring approval using the certification procedure and unintentional digital circuity requiring use of the SDoC procedure.

Equipment that consists of only a radio transmitter (not a transceiver) – such as remote control transmitters; land mobile radio transmitters and wireless medical telemetry transmitters – are required to be approved using the certification procedure.

Equipment that only contains digital circuitry (does not contain a radio transmitter) – such as computer peripherals, microwave ovens consumer ISM equipment, switching power supplies, LED light bulbs, radio receivers and TV interface devices – are subject to approval using the SDoC procedure or may optionally use the certification procedure.