It's been about a year from last thread on sirens. I just installed Konnected INTERFACE module and need a loud battery operated z wave or zigbee siren to connect to HSM. Appreciate any suggestions!
I use the Vision siren ZM1601US-5. It is very loud and battery operated. It is z-wave. I use the linear/vision driver.
I have the Dome siren and have been very happy with it. I know some folks have had mixed results but it always works for me. Always goes off and more importantly, always shuts off quickly too.
I have the GoControl-branded version ( WA105DBZ-1) of the same siren. Obnoxiously loud, but that's good for a siren 
Thank you all for your suggestions. I saw the vision siren this morning on Amazon and glad I got some honest reviews from you all here
