FCC Modular Approval
Modular Approval is an FCC equipment authorization pathway that allows a radio module to obtain independent Certification and its own FCC ID under 47 CFR and the applicable rule parts.
A certified module may be integrated into host devices without requiring a new FCC ID, provided that all conditions defined in the original Grant of Equipment Authorization are met.
Key Takeaways
Modular Approval applies to independently certified radio modules.
The module receives its own FCC ID and Grant of Equipment Authorization.
Host devices may reference the module FCC ID if integration conditions remain unchanged.
The host manufacturer retains regulatory responsibility for the final product.
Deviations from approved conditions may require a permissive change filing or new Certification.
Regulatory Basis
Modular Approval is primarily governed by:
47 CFR §15.212 – Modular transmitters
47 CFR Part 2 – Equipment Authorization Procedures
Relevant FCC OET Knowledge Database (KDB) guidance
The approval applies only to the specific module configuration evaluated and reflected in the Grant of Equipment Authorization.
Modular Approval applies exclusively to devices subject to the Certification procedure and does not apply to devices authorized solely under the Supplier’s Declaration of Conformity (SDoC).
Types of Modular Approval
The FCC distinguishes between two primary forms of modular authorization.
Full Modular Approval
The module meets shielding, buffering, power regulation, and RF containment requirements independently of the host device.
No additional RF evaluation is typically required if integration conditions remain within the approved scope defined in the Grant.
Limited Modular Approval
The module does not fully meet standalone configuration requirements and was certified under defined integration conditions.
Additional host-level evaluation may be required depending on the final device configuration.
Integration Conditions
A host manufacturer integrating a certified module must ensure that:
Only approved antenna types and gain levels are used
RF output power and transmission parameters remain within certified limits
Co-location with other transmitters is properly evaluated
RF exposure compliance remains valid for the final configuration
Host labeling references the module FCC ID where required
Example host labeling:
Contains FCC ID: [Module FCC ID]
Failure to meet integration conditions may invalidate the modular approval and trigger additional authorization requirements.
When Additional Authorization Is Required
A permissive change filing or new Certification may be required if:
Antenna type or gain exceeds approved limits
Firmware alters transmission characteristics
Additional transmitters operate simultaneously without prior evaluation
Hardware modifications affect RF circuitry
Relationship to FCC ID
Each certified module is assigned an FCC ID and listed in the FCC Equipment Authorization System.
Host devices relying on Modular Approval must ensure that:
The referenced FCC ID matches the certified module configuration
The final product remains within the scope of the original Grant
→ FCC ID Requirements – Search, Labeling & Certification
Lifecycle Considerations
Modular Approval applies only to the configuration approved in the original Grant of Equipment Authorization.
Product updates affecting RF parameters, antenna characteristics, firmware control of transmission functions, or simultaneous transmission conditions may require regulatory reassessment.
Manufacturers remain responsible for documenting and evaluating all configuration changes to ensure continued compliance.
Further Reading & Official Resources
Official FCC Resources
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Electronic Code of Federal Regulations (eCFR) – Title 47
Available at: https://www.ecfr.gov/current/title-47
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Federal Communications Commission (FCC) – Office of Engineering and Technology (OET) Knowledge Database (KDB)
Available at: https://apps.fcc.gov/oetcf/kdb/index.cfm
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FCC Equipment Authorization System – FCC ID Search
Available at: https://apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
Additional Resource
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TAMSys by IB-Lenhardt AG – Type Approval Management System
Centralized platform for managing FCC certificates, labeling data, documentation status, and lifecycle tracking. → TAMSys – Type Approval Management System
This is a curated selection of key regulatory and technical resources. For legally binding and up-to-date requirements, always refer to the official publications and databases of the Federal Communications Commission (FCC). All references were verified as of February 2026.