You can customize the entry delay duration and its volume. The entry delay gives you some time to identify yourself when you get home or to disable it manually via the Home + Security app. If nobody has been identified or the Siren has not been manually stopped, it will start sounding the 110dB alarm at the end of this delay.
The alarm duration allows you to choose how long the loud siren sounds for when it is triggered. It is not possible to change the volum on which the alarm sounds.
You will also find an easy access to your Cameras' and Sensors' alert and recording settings so you can choose which events should automatically trigger the Siren.
Finally, you can also choose the volume of the sound effects. You can manually play them anytime to simulate a presence at home.