i may have heard that one way back then.. but dont recall it. http://www.rms-inc-usa.com is my web presence and has an audio clip, and pdf of the duo-sonic, if thats of interest. best... rich :shy:

rms, inc [me] invented the siren and i still have a few that can be built on custom order. i also used the duo-sonic in my volunteer fire days... nothing better. please write if you are interested in one. rms, inc will bill you via paypal for a deposit, or can take your credit card via 'square regis...