FCC-ID: Still Needed if Module is Certified?

The client manufactures electronic door locks and uses a purchased Bluetooth module. The supplier has already obtained an FCC-ID certificate for the Bluetooth module. Now the client intends to export the complete product (Bluetooth smart lock) to the United States. Is it necessary to apply for a separate fcc-ID for the whole device?

Core Requirements of fcc certification

Whether the Bluetooth smart lock needs a separate FCC-ID certification depends on FCC rules for modular devices. Key points include:

1. Scope of FCC-ID:

- Any electronic device with wireless transmission (Bluetooth, WiFi, ZigBee, etc.) sold in the U.S. must obtain FCC-ID certification.

- The complete product must have a unique fcc identifier on its label.

2. Rules for Modular Devices:

- If the Bluetooth module is already FCC-ID certified and meets FCC Modular Approval conditions, the host device may not need new certification.

- If the module does not meet those conditions or the host device design affects RF performance, then full FCC-ID certification for the entire product is required.

Key Evaluation Criteria

Criterion 1: Does the module meet Modular Approval requirements?

According to FCC KDB 996369, the following must be met:

- The module must have RF shielding.

- It must have a fixed antenna or standardized connector (e.g., U.FL).

- Power supply must be voltage-regulated.

- It must pass all FCC tests (power, frequency, spurious emissions).

- The grantee must sign a Modular Approval Declaration.

If these are not fully met, full FCC-ID certification for the host device is required.

Criterion 2: Does the host device affect RF parameters?

Even if modular approval exists, changes may still require re-certification:

- Changing antenna type, layout, or gain.

- Host circuits (like motors or displays) cause RF interference.

- Metal casing or layout causes RF signal attenuation beyond certified levels.

Recommended Actions

Scenario 1:

Module meets Modular Approval conditions AND host device does not change RF performance

→ No need to apply for a new FCC-ID

Actions:

- Label the device with the module's FCC-ID (e.g., FCC ID: XXXXXXXX).

- User manual must state: "This device contains FCC ID: XXXXXXXX."

- Conduct fcc part 15B testing for EMC and apply for sdoc (Supplier’s Declaration of Conformity).

Scenario 2:

Module does not meet Modular Approval OR host design affects RF

→ FCC-ID certification for the complete device is REQUIRED

Steps:

- Submit application to a TCB (Telecommunication Certification Body).

- Provide the module's FCC-ID certificate and test report.

- Test the complete product for Part 15C (RF) and 15B (EMC).

- Obtain a new FCC-ID for the complete product and label it accordingly.

Compliance Risks

Warning 1: Improper FCC-ID use

If a host device does not meet Modular Approval criteria but uses the module’s FCC-ID, it may be detained at customs or fined by the FCC (up to $21,928 per day).

Warning 2: Labeling and documentation

Even if a new FCC-ID is not required, labeling and user documentation must comply with FCC regulations. Non-compliance can still result in penalties.

Summary of Key Factors:

- If the module meets Modular Approval:

→ No need for new FCC-ID; just label and SDoC (Part 15B)

- If the module does not meet Modular Approval:

→ Full deviCE certification (FCC Part 15B + FCC Part 15C) and new FCC-ID required

- If the host device affects RF parameters:

→ Full device certification (Part 15B + Part 15C) and new FCC-ID required