The Tsunami sirens in New Brighton (Christchurch, NZ) also have verbal output. Does result in a strange "echo" because you hear other sirens talking delayed by

The Tsunami sirens in New Brighton (Christchurch, NZ) also have verbal output. Does result in a strange "echo" because you hear other sirens talking delayed by the distance they are placed. But it does mean they can give extra info (e.g. during tests).