At 08:25 PM 9/26/2007, you wrote:
>"Tony Smith"
><<mailto:ajsmith%40rivernet.com.au>ajsmith@...> writes:
> > Cool doors, glass with electromagnets to hold them closed.
>
>I asked about the magnets once. It's a fire code thing; the doors
>automatically unlock in the event of fire or power loss
they usually use accus as a back-up power supply
>, just because
>the magnets stop working. With a "power open" lock, people might get
>trapped in a burning building.
>
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