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Avalon kit?

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Something jogged my memory the other day, what were those boxes, about the size of a small box of cornflakes, usually painted white but connected with pyro, they were always badged 'AVALON'?


Were they very early voice evac systems, or sounders, they had the look of a speaker about them? But always wired up with fireproof cable whenever I saw them.


If you go online and do that google walkabout thing in the now gone BBC TV centre they are full of them, but I first saw them in the early 90s in a shopping centre I worked at for a very short time before finding my pliers...

Edited by datadiffusion

So, I've decided to take my work back underground.... to stop it falling into the wrong hands


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