An electrical connection passing through a dividing wall contains a contact
plate (2) having a base piece (4) covering a surface, and a contact piece
(8) connected to the base piece via a connecting piece (6), wherein the
perimeter of the base piece, including the attached area of the connecting
piece, is held and sealed in the dividing wall (24), and the contact piece
has an elastically deformable area (10) exposed for making contact with a
component. The dividing wall seals a chamber of a housing in which is
located an electrical circuit connected by a contact lug (12) of the base
piece (4). Outside the chamber a battery compartment is provided in which
is held a battery pressed elastically in position against a facing surface
by the spring tongue (10).
