FCC ID Certification: The Difference Between Single-Mode and Dual-Mode Devices

FCC ID certification in modern wireless communications equipment

In modern wireless communications equipment, FCC ID certification is a critical step in entering the U.S. market; FCC ID is an equipment certification number issued by the Federal Communications Commission (FCC) that identifies radio-frequency equipment that complies with FCC regulations. The FCC ID certification indicates that the device complies with the FCC's regulations on electromagnetic compatibility of electronic devices and can be legally sold and used in the U.S. market. During the FCC ID certification process, devices can be categorized into two types: single-mode and dual-mode, which have different requirements and considerations during the certification process.

What are single-mode and dual-mode devices?

Single-mode equipment: Supports only one wireless communications standard or frequency band. For example, only 4G LTE networks or a single Wi-Fi band (e.g. 2.4GHz or 5GHz) are supported.

Dual-mode equipment: Supports two different wireless communication standards or frequency bands. For example, support for 4G LTE and 5G NR (New Radio) networks, or both 2.4GHz and 5GHz Wi-Fi bands.

FCC ID certification for single-mode devices

Definition: Single-mode devices support only one wireless communication standard or frequency band.

Certification Requirements: The device needs to pass the tests related to a single communication mode. For example, if the device only supports 4G LTE network, only 4G LTE related electromagnetic compatibility and radio frequency tests are required.

Test range: Only complete testing for that single mode is required to ensure FCC compliance in that mode.

FCC ID certification for dual-mode devices

Definition: Dual-mode devices support two different wireless communication standards or frequency bands.

Certification Requirements: Devices need to pass the relevant tests for the two communication modes separately. For example, devices supporting 4G LTE and 5G NR networks need to undergo electromagnetic compatibility and radio frequency tests for 4G LTE and 5G NR respectively.

Test range: Complete testing is required for each mode to ensure FCC compliance in both modes. The performance and compatibility of the device when switching between modes also needs to be tested to ensure that no harmful interference occurs.

Specific Differences in the Certification Process

Single-mode equipment:

• Only a single mode of relevant tests such as frequency range, power output, spectral characteristics, etc. are required.
• Once the test results are submitted and reviewed, an FCC ID will be issued.

Dual-mode equipment:

• It is necessary to conduct relevant tests for multiple modes to evaluate the frequency range, power output, spectral characteristics, etc. of each mode separately.
• It is also necessary to test the performance of the device when switching between different modes.
• Once the test results are submitted and reviewed, an FCC ID will be issued.

Whether a device is single-mode or dual-mode, obtaining FCC ID certification indicates that the device meets the FCC's technical and safety standards and can be legally sold and used in the U.S. market. The certification process for single-mode devices is relatively simple and is suitable for devices that require only a single network support, while the certification process for dual-mode devices is more complex but provides broader network support and is suitable for devices that require use in multiple network environments.

By understanding the differences between single-mode and dual-mode devices in the FCC ID certification process, manufacturers and importers can better choose the certification method that is right for their devices, ensuring that their products enter the U.S. market smoothly and meet consumer demand.