Siren loudness (if built-in)

A built-in siren is available in-app as a deterrent feature, with reviewers generally treating it as a useful extra rather than a daily-use tool.

A built-in siren is mentioned as a valuable deterrent feature, and at least one reviewer describes it as quite loud. It is typically controlled from the app as part of the security feature set.

The doorbell includes a built-in siren option, though at least one reviewer wanted it louder and treats it as a secondary deterrent feature.