The relay is part of the lift access control solution and is dedicated exclusively to this purpose. One relay can control up to 8 floors and you can connect up to 8 AXIS A9188 relays for lifts to one 2N IP intercom or access unit. It means the solution is suitable for up to 64 floors. See our FAQ section for information on how to connect the AXIS A9188 Network I/O Relay Module for lifts.