Modular approvals apply to non-stand-alone products (devices that are
designed for use in other end products). This type of certification enables a
manufacturer to incorporate an approved module into a product without having to
retest or recertify the module.
• 1. RF Shielding - The modular transmitter must have its own RF shielding;
it does not rely on the shielding provided by the device into which it is
installed in order for modular transmitter emissions to comply with Part 15
limits and to prevent coupling of emissions to or from the module and any wires
or other circuitry resulting in non-compliant operation.
• 2. Buffered Data Input/Output Ports - The modular transmitter must have
buffered modulation or data inputs (if provided) to ensure that the module will
comply with Part 15 requirements under conditions of excessive data rates or
• 3. Power Supply Regulation - The modular transmitter must have its own
power supply regulation. This ensures that the module will comply with Part 15
requirements regardless of the design of the power supplying circuitry in the
device into which the module is installed.
• 4. Permanent Antenna or Unique Connector - The modular transmitter must
comply with the antenna requirements from Section 15.203 and 15.204(c).
• 4a. The antenna must either be permanently attached or employ a "unique"
antenna coupler (at all connections between the module and the antenna,
including the cable).
• 4b. Any antenna used with the module must be approved with the module,
either at the time of initial authorization or through a Class II permissive
change. The "professional installation" provision of Section 15.203 may not be
applied to modules.
• 5. Tested in "Stand Alone" Condition - The modular transmitter must be
tested in a stand-alone configuration (i.e., the module must not be inside
another device during testing).
• 5a. This is intended to demonstrate that the module can comply with Part
15 emission limits regardless of the device into which it is eventually
• 6. Labeled with Own ID Number - The modular transmitter must be labeled
with its own FCC ID number. If the FCC ID is not visible when the module is
installed inside another device, then the host device must contain the FCC ID
number with the statement such as the following: "Contains Transmitter Module
FCC ID: XYZMODEL1" or "Contains FCC ID: XYZMODEL1."
• 7. Instructions to Operator / OEM Integrator - The modular transmitter
must comply with any specific rule or operating requirements applicable to the
transmitter and the manufacturer must provide adequate instructions along with
the module to explain any such requirements. A copy of these instructions must
be included in the application for equipment authorization.
• 8. Must Meet RF Exposure Requirements - The modular transmitter must
comply with any applicable RF exposure requirements. FCC Rules in Sections
2.1091, 2.1093 or any specific rf exposure requirements of part 15.
If a device does not have all eight items, it may still be possible to do a
Limited Modular Approval.