Elevator expansion board HD BE INO

HD BE INO is an expansion board used to extend the HD BE control board up to 32 floors. It has screw terminals numbered 1-16, two relay contacts, DIP-switch addressing, and CPU, TX, and RX LEDs. Part number: HD-K021403 Number of floors: 32 Ends: 1-16 Relays: 2 Indicators: CPU / TX / RX