The FCC has set aside certain frequency bands for unlicensed applications. The term unlicensed is often misunderstood. The manufacturer of a product designed for unlicensed operation is not exempt from the certification procedure. Both the transmitter and receiver must be tested by a qualified testing laboratory and an FCC ID number obtained before the product can be legally sold. Once this has been done, however, the end user of the product can operate it without obtaining a license for its use.