Is there such a thing as a horn or siren that can stand alone, and plug into a wall outlet?

For Hallowe'en I need a siren or buzzer I can plug into a motion detector. It has to be a stand alone unit that can plug into standard wall outlet.

Is there such a thing as a horn or siren that can stand alone, and plug into a wall outlet?
Couple places on the internet





http://www.theatrefx.com/store/commerce....





http://www.smarthomeusa.com/Shop/Securit...





Ranging from $15 - $20, plugs into 110v wall power, on/off switch, 110db ear-splitting siren. Locally, I don't think there's enough demand for stores to stock them. You might try Home Depot or any other store that sells supplies for home security, possibly Radio Shack.
Reply:You could use motion lights and rig up the light soket to turn on a siren



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