Hello everyone, I received this alarm key ring but I'm disappointed. Indeed 115 decibels is actually not very hard, we tried at home and the verdict is severe in an agglomeration the sound is not heard again the key holder is lightweight plastic, it would suffice to slamming the fort it would break ground immediately. Only positive: Practice light when seeking the keyhole in the dark on the way ... but at this price, it does not worth it. Not recommended.