ANATEL certification is a mandatory requirement for telecommunications products to enter the Brazilian market, applicable to both domestically produced and imported goods. The certification primarily focuses on product safety and compliance with Brazilian telecommunications regulations. The National Telecommunications Agency (ANATEL) is the regulatory body responsible for overseeing telecommunications and radio equipment in Brazil.

Before obtaining ANATEL type approval, applicants must first seek a Certificate of Conformity (CoC) from an OCD (Designated Certification Organization) authorized by ANATEL. Only after the OCD has prepared the necessary documentation can applicants proceed with the ANATEL certification process.

ANATEL maintains a list of products subject to certification, which primarily fall into three categories：

Category I: Terminal equipment for public use aimed at providing telecommunications services in the public interest. Common examples include products related to 2G/3G technologies, such as mobile phones, satellite phones, VoIP phones, mobile batteries, mobile adapters, power banks, telephone signal cables, and modems.

Category II: Any radio-frequency equipment not covered under Category I, such as low-power devices, unlicensed equipment, and antennas. Common examples include products using Wi-Fi, Bluetooth, NFC, or LoRa technologies, such as TV and radio antennas, receivers, transmitters, wireless network equipment, and RF automation devices.

Category III: Any other equipment regulated by ANATEL rules and ordinances not covered under Category I or II. Examples include optical fiber cables, cable connectors, mobile network signal transmitters, and switches.