we need little setting up process for using dome siren with smartthings.
first, we have download device handler and upload to smartthings ide, and specified the device as dome siren at device page
details for setting up
changing device as dome siren at “my devices” tab
when i can’t find my devices at webcore
follow instruction below
Open the SmartThings app
Go to the WebCoRe smartapp
Click into it
Then available devices and you add it in there.