How loud is this siren

[Lukedoolin]

I've been looking at buying this air raid siren it says it's rated at 180 decibels but exactly how loud is that, I don't wanna be able to just hear this thing I want it to be able to rattle windows at 400 yards or more and is there any sirens out there that's more powerful than this one
https://m.alibaba.com/product/867549787 ... 9.3.7SEBTu

[WhammyP-50]

I highly doubt it is 180db (c). The loudest volcano eruption was just under 190db at a far distance. If it is Chinese made it is most likely a gimmick. Your ear tissue starts dying around 180. If the ACA P-50 was 135.8 db (c) at 100 feet then at max it should be 160db (c) at like 20 feet away. They usually do tests for sound at around 10 feet around. I highly doubt if it was 180db (c) you are able to set it off.
Think, -10 db (c) per distance doubled.
180-10 =20 feet
170-10= 40 feet
160-10= 80 feet
150-10= 160 feet

140 db (c) at 160 feet! That is redonkulus! That's the sound of Fire Works at close range! I highly doubt it is legal anyways to sound something that will rattle your house and will be heard for at least 400 yards. If it was really 180 db it could be heard for at least 20 thousand feet if the 180db (c) was measured at ten feet.

If this db rating is genuine then this would be the loudest siren there is. I highly doubt it would be sold on some unknown Chinese website where anyone can purchase it. Whoever wrote those specs is a fool!
I am sure this is correct but in case this too is complete gibberish please correct me. Thanks

-Whammy