This is exactly what I was looking for and BOY is it loud. Perfect fit for the DSC Neo. Sounds just like my grandmothers siren back during my childhood. Easy to wire and just all out perfect. I will warn you, this thing is VERY loud. It’s a big boy security product, not a funky tablet on a wall kinda siren so it’s perfect. They truly don’t make them like this anymore. Hard to find.