VTech IS7121 Installation Manual page 10

5.
Loosen the screws and the metallic plates, then slide the
metal part of the wires underneath the metallic plates as
shown. Twist the screws to secure.
Metallic
plate
Wire with
black end
If you already have a wired doorbell
installed, see Installing the doorbell
with an existing wired doorbell from
pages 14 to 16 to install your new
IS7121 doorbell unit.
0
Screws
Metallic
plate
Wire with
red end