Sound activated z-way sensor

[SLP]

Hi,

I don't think it exists, but would anyone know of a sound activated z-way sensor ? I have a couple of older 'legacy'

alarms that have beeping (like old driveway sensor) and before I open it to wire in contact relay etc, thought I'd go

the quick and dirty method of triggering off sound. Thanks in advance

[Mecheng70]

Can you use the wires that go to the siren to trip a contact sensor?  Not sure how much volt/current would go to the siren.  

[SLP]

Mecheng70 ....that's my fall back plan...was hoping to cheat and get a quick and simple solution. Thank you.