The exact reviewed remote model is RF399B. The document names MC120NM as its matching control box. No alternate RF399 suffix or universal RF-series application is included.
Keep the receiver reference with the receiver
A receiver FCC reference occurs in the supporting material. It is not assigned as a handset FCC ID in this dataset. Copy identifiers from their own labels; a number printed in a system manual can describe a different component.
What the match tells you
The box-to-remote row below is a documented system pair. It does not establish RF399B as a successor to another remote, replacement compatibility between boxes, or preservation of features on an unlisted base. If the box label differs, the result remains unverified.
Family and exact variant identification
1 reviewed record
These are exact records within the named family. A shared family does not make the entries interchangeable.
Identifiers and limits of the reviewed records
Exact record
Published identifier fields
What still needs checking
RF399B
product model: RF399B
No reviewed handset FCC ID or feature-preservation guarantee is supplied by this identity record. Check this exact record →
What we verified
Source-specific evidence
Read each row from original to target. A base application or box-to-remote pair is not a remote-to-remote replacement. Known constraints remain part of the decision.
Documented relationships; direction and exact scope matter
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 page-relevant assertions.
Match the complete model suffix and the original control-system label. This manufacturer-authored document identifies a particular remote model; same radio family, appearance, or button count does not confirm replacement compatibility. Customer-specific part code and firmware may still be required.
