High output, small package waterproof sounders?

[mc172]

I'm looking to alarm a piece of remote equipment I'm building and I'm struggling to find a suitable sounder to serve as the alarm. Does anyone know of a relatively high output yet reasonably small for the purpose (given that I want to make a racket) sounders/drivers/whatever? Something like a waterproof smoke alarm sounder would do the job, but I can't find one. They are also a bit susceptible to being silenced by poking.

My enclosure is a die-case aluminium housing which is about 8 inches square by 4 inches deep. It's passes my IP67, standard issue UK wheely-bin full of water test as-is (it has an O-ring type gasket around the sealing face) and I'd like the sounder to be at least IP54 if possible.

I've got some old 1" compression drivers knocking about but I don't need the bandwidth and they're a bit on the large side, not to mention not being very waterproof.

I'm not really bothered as to whether I have to give it an amplified signal or just power - anything would be a start.

[Zero999]

What voltage does it run off?

Do you need to vary the tone or is fixed fine?

https://www.acornfiresecurity.com/ziton-as374-hazardous-area-sounder?gclid=CJvpna-KqtMCFUO3GwodD-ICHg
http://www.eibmarkt.com/gb/products/ABB-Stotz-S-J-Buzzer-90dB-CB1-630B.html?utm_source=Portalexport&utm_medium=CPC&utm_term=Produktaktion&utm_campaign=GoogleShopping_GB&userLocale=GB&gclid=CPHd-pKKqtMCFdTnGwodQ78GMA
http://www.alliedelec.com/eaton-cutler-hammer-m22-amc-xamp/70239056/

[mc172]

It will run off 12 V.

I don't need to vary the tone if I can command it on and off easily (thus generating a similar effect to changing the tone). I can't see why this would be a problem, just saying.

The Eaton and ABB ones look promising, thanks for that.

[max_torque]

How much of a racket?  A hurt you ears >100db kinda racket or less?

I've used pcb mount piezo sounders, firing out through Gore vents in a small ally enclosure for an operator alarm and it's reasonably loud?

[mc172]

I'd consider 90-93 dB at 1 m to be sufficient racket, but the high 80s would probably do the job. I don't want to do any damage.

Not a bad idea. I've never heard of Gore vents (although I've heard of and used Gore) and will check them out. Thanks.

[Zero999]

It will run off 12 V.

I don't need to vary the tone if I can command it on and off easily (thus generating a similar effect to changing the tone). I can't see why this would be a problem, just saying.

The Eaton and ABB ones look promising, thanks for that.

What's your budget?

I've just noticed that one of the links I posted previously was for ATEX approved (explosive atmosphere) and very expensive, as a result. If you want cheap a piezo disc tightly clamped and glued with silicone to the inside of an enclosure with a few small sound holes would do.