Click-clack ... click-clack (the sound of relay logic) accompanied by the constant running of a motor-generator set steadily converting 60 Hz AC line to DC (in some situations).
Sure beats the hum-drum non-eventful sounds of a solid-state controller!
Is that your specialty - elevator control systems?
101 posted on 01/26/2005 11:32:48 AM PST by _Jim
(<--- Ann C. and Rush L. speak on gutless Liberals (RealAudio files))