here in the UK Ring Alarm is late into the self-install home alarm game. There is one main widely installed competator solution that offers a very similar solution, but includes an External Alarm / Siren box option with led active status lights. In fact you can have multiple boxes, including branded dummies. These act as a deterrent as well as adding external sirens to the property.
Will Ring be brings out such hardware, branded or unbranded ? It’s definitely a missing component of a home alarm at least here in the UK.
note: we only have the small Ring Alarm pack offering here in the UK and its current price point is higher than the competition. We don’t have the option to add a 3rd party siren in the UK, or any of the other additional sensors etc. We just have the motion and window/door sensors currently.