| Hom | Hom Khoom | Tus lej qauv | Siv tau | MOQ | Feature |
| Dav Dav | PCB ntawm Elevator | JOA6840GC | Rau Otis Elevators | 1PC | Tshiab kiag li |
Lub tshuab nqa MIB motherboard JOA6840GC program board rau Otis elevator. Peb muab ntau hom hom thiab qauv, yog tias koj xav tau lwm cov qauv elevator PCB lossis elvetaor qhov chaw, thov hu rau peb kom paub meej ntxiv.