RF399B manufacturer manual names matching control model MC120NM and receiver FCC ID 2AK23MC120NM. This is not a family-wide MC120 compatibility assertion.
Replacement fit is not confirmed by the family name. Copy the full part number and revision from the remote back, battery compartment or accessible control-box label. If it is unsafe to reach a label, ask for help.
Documented system pairs — these are not replacement parts
MC120NM + RF399B: Keeson RF399B manual explicitly names matching model MC120NM. This is a documented system pair, not substitution for another box or firmware. Feature preservation on other systems is unknown. Source
For support, record the complete remote and control-box labels, base model, revision and observed symptom. Ask the manufacturer to confirm a directed replacement and any pairing or feature limitations in writing.
Keep the NM suffix on the box model
The documented match is MC120NM to RF399B. A shortened MC120 search or another suffix does not select this exact record. Copy the complete box label before evaluating a handset.
Keep the receiver’s FCC reference with the receiver
The supporting material includes a receiver FCC reference. That field is not used as an FCC ID for RF399B, and it does not establish compatibility with another remote. Component identity and the system-pair statement are separate pieces of evidence.
This record doesn’t identify a replacement box
The manual’s matching-model statement is useful when checking the remote used with this box. It does not identify a replacement for a failed MC120NM, verify connector pinouts, or establish feature preservation on an unlisted retail base.
All part identifiers and configuration details
Identify the exact version
1 reviewed record
These are different versions within this family. Check the full identifier; they aren’t automatically interchangeable.
Part identifiers and details to check
Part or version
Documented label details
What still needs checking
MC120NM
product model: MC120NM
receiver fcc reference: 2AK23MC120NM
This identification record doesn’t provide a verified remote FCC ID or guarantee which features will be preserved. Check this exact part →
Detailed relationship records and source claims
What the sources confirm
Source-specific evidence
Read each match in the direction shown and check its conditions. A listed base or control-box match tells you which remote it uses; it doesn’t name a replacement for another remote.
Documented matches: check the direction and conditions
Keeson RF399B manual explicitly names matching model MC120NM. This is a documented system pair, not substitution for another box or firmware. Feature preservation on other systems is unknown.
Evidence dates describe the reviewed records. They are not a promise of continuous monitoring. Read the verification method.
RF399B remote user manualDocumented replacement · Keeson Technology Corporation Limited
Reviewed 2026-09-23 · 7 relevant claims.
RF399B manufacturer manual names matching control model MC120NM and receiver FCC ID 2AK23MC120NM. This is not a family-wide MC120 compatibility assertion.
Can the receiver FCC reference identify the remote?
No. Receiver and handset identifiers must remain attached to their own components.
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