Call Chime (Switch-Adapted)
"Responding to customer requests for a call chime that operates via a switch, here is my Switch-Adapted Cordless Call Chime. It's inexpensive, has a 'stated' 75 foot range. The receiver/Chime plugs into a wall socket. The transmitter is switch-adapted." RJ
The Call Chime (Switch-Adapted) is the yin, to your yang. You've found what you're looking for.