Power failure alarm

Space cat said:
PS: By now you might be wondering what will happen if the bell fails. How will you know? :? :? :? To get round this you will need the Sellafield solution. Their alarms sound continuously unless there's a problem. If they stop, you run! :shock: :shock: :shock:
Click to expand...

Didn't Homer Simpson patent that as the "Everything's OK!" alarm? :P
 

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