What is the best Siren product now? How can I make the siren sounds when door is open?

What is the best Siren product you think?

How can I make the siren sounds when the door is open?

Thanks!

Do you want a Siren or a do you want a Chime when a door is opened?

I want a siren that makes sound when door is opened when it’s armed.

Depends on your region (US, UK, Eu, APAC etc) @JDRoberts