>For pianos that move and are truely >important to be controlled one could add a ups power supply--it would carry >the load for several hours, and would *beep* until it was plugged in again. Or a cheaper alterative that someone suggested a few years back, a battery powered emergency light (Radio Shack, I think) that plugs into a wall socket and lights up automatically when the power goes off. Remove bulb socket, replace with buzzer (also Radio Shack), and wire it in to the main power cord with a clip on socket. Ron N
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