dormakaba BAZ: Cylinder locks with construction phase function

With the Kaba special function "construction phase" (BAZ) the keying of the cylinder can be changed up to two times, without replacing the cylinder itself. This creates a new cylinder lock without exchanging the existing one, which in case of key loss saves time and money. If a key is lost, or tenants move out with the first key, one turn with the change key invalidates the previously used key.