R Kannan wrote in news:uH0Ci.48429$Um6.47663
@newssvr12.news.prodigy.net:

So they work by closing the circuit then?

Yes.

What is the purpose of the the
circuit pattern underneath the button?

To increase the contactarea, in a fashion.


Is it possible to get replacement buttons to get these to work?


Usually they are built as a keypad custom for the device. If they are
individual elestomeric elements, I dno't think there are spares. If
possible, replace with a tact button.(I have done that with at least one
clock radio).