1. Extension board use for following elevator logic board.
2. No supply voltage requirement.
3. On board number of stops 8.
- 8 landing call.
- 8 car call.
- 8 floor reed input.
4. Only one card use at a time.
5. Easy connection with Main logic board with the FRC (Flat Ribbon Cable).
6. Status of all inputs & outputs though LED indication on board.
7. No need of change any parameter in Main Elevator Logic board, just change Maximum Number of Floor in some models.