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Yeah, very foolproof.... they're all wired in series to the coil of a micro relay that uses the NC contacts to set off the alarm. If memory serves I'm pretty sure I got them from that All Electronics outfit that sends out the mailers with surplus electronic supplies for cheap. I'm also pretty sure you can find them at either Mouser, Digi-key, or Newark. They don't cost but a couple bux each.
<marv>
Posted for "John Slade" <sladerj@bellsouth.net>:
I installed a string of 368*f thermal fuses around the
upper perimeter of the firewall
That sounds like an inexpensive and relatively simple warning system. Where
did you get the fuses?
John
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