Brooke Clarke <brooke <at> pacific.net> writes:
>... need signal from mailbox when filled

Interesting predicament. I am sure you can set up a QRSS beacon which just
so happens to start operating when the little switch in the box which nobod=
y
can see is activated. 10mW should be enough for a mile, mountain or no
mountain. Oh, and, you can probably receive it while on vacation in
Antarctica if needed.

-- Peter

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