Connected to the CT-V900-A controller’s expansion bus, each CA-A480-A can control up to 16 floors. The CA-A480-A floor control relays can be interfaced directly with an elevator’s floor control buttons. When a valid card is presented, the appropriate floor control relays will become enabled allowing the cardholder to select the desired floor. Destination Controlled Mode, which requires a CA-A482-P Destination Reporting Module, offers far superior event trail and user accountability. In addition to these advanced floor and elevator control features, the CA-A480-A also features full supervision, backup battery and a fire alarm input.