The LiftMaster K79-13493A-400 is an FDOA logic board assembly with the 400 chip configuration for select commercial fire door operator service applications. It is part of the K79-13493A fire-door board family.
Commonly associated with FDOA fire door operator board replacement and listings for SJ1021, SJ1023, and SJ1043 applications. Some K79-13493A references also mention SJ1011. Confirm by exact chip version and parts diagram.
This part should be ordered by the full K79-13493A-400 number and chip version. The A-series fire door boards can look similar, but the 400 and 600 chip versions are different service listings.
Fire door operators are safety-related systems. Board replacement should be completed by a qualified technician familiar with commercial door and fire-door operator requirements.
Yes. K79-13493A-400 is commonly described as the FDOA logic board assembly with the 400 chip.
Listings commonly reference SJ1021, SJ1023, and SJ1043. Check the operator parts diagram before ordering.
No. The 400 and 600 chip versions should be treated as different board applications unless manufacturer documentation confirms otherwise.
No. This listing is for commercial fire door operator applications, not a residential gate operator board.
The board controls a commercial fire door operator and must be wired and tested correctly with power, limits, safety circuits, and fire-door functions.
