The lock reads the UID of the card (CSN or info from within the card) and sends it to the host via the SALLIS infrastructure.
The door opens if the user is granted access.
The door opens from host.
The Host receives the request and checks permissions for the user. The result of this check is sent back to the RF Lock.
The Host is a door controller that has interfaced with the SALLIS router and is at the core of the system; it is where all decisions are made.
The Node is the wireless hub between the lock and the router. One Node can control 16 locks.