From: thor44@frontiernet.net   
      
   My old 3 channel motion detector system had a relay on the receiver that   
   when the nearly inaudible factory buzzer went off, the relay closed for a   
   short duration. A quick visit to Radio Shack and a small plastic box, a loud   
   buzzer powered by a 9V battery, and a couple wires to the factory relay   
   contacts on the receiver, and the audible problem was solved.   
      
      
      
      
   The present. Due to a leaking battery in one of the transmitters, it was   
   rendered defunct. Of course the company has "updated" everything and the new   
   transmitters will not work with the old receiver. No problem, I just ordered   
   a new system. The buzzer is still too soft, but there isn't a relay on this   
   new one to use an external buzzer.   
      
      
      
      
   What I'm looking for, is a  sound activated relay which I assume would   
   utilize a cheapie type microphone that I can place next to the receiver, and   
   simply run my old Radio Shack buzzer box across the sound relay contacts.   
      
      
      
      
   Now back in the day I'd simply find a decent schematic, fire up the   
   soldering iron and whip something up. I'm now 73 tears old and the old   
   "Arthur Brothers" joints simply won't let me do it anymore, so I need a plug   
   and play sound activated relay---that I would assume came with a 110V power   
   supply module.   
      
      
      
      
   I'm open to suggestions, and a million thanks for listening. Lee.   
      
      
      
      
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