Example: 1 Car, 4 Floors

In this example, we're using a PRT-WX-DIN-1D Single Door Controller to connect to the card reader in the elevator as we only need 1 reader port.

We've chosen a PRT-IO84-DIN to provide the 4 floor control outputs, and can use the remaining 8 inputs for other purposes such as intruder detection

Expander modules are not dedicated to elevator control, so any unused inputs or outputs can be used for other purposes