Has anyone seen a 12 button RF keypad, like a telephone keypad (0-9, #,
*) built into battery operated keychain sized pendant?  A matching
reciever would be good as well, but the pendant is the most important
part- it would take a bit more mechanical engineering than I'm willing
to drop into a home project.  Preferably, it would be just big enough so
that the buttons could be pressed by regular sized-fingers, but still
small enough to be put into a pocket, maybe 40mm x 60mm x (<10mm).

Matt Bennett

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