Installing the doorbell with an, Existing wired doorbell, Getting started – VTech IS7121_-2-22 Manual User Manual
Page 24: Transformer
Getting started
19
Installing the doorbell with an existing wired doorbell
If you already have a wired doorbell installed, follow the instructions below to install
your new
IS7121 doorbell unit.
Turn off the power supply to the existing wired doorbell.
Follow Step 1 through Step 5 in
Doorbell installation on pages 14-16.
Insert a cross-head screwdriver to the side of battery compartment on the right,
then twist and lift to loosen the screw and the metallic plates. Using a wire, slide
one end of the metal part of the wire underneath the metallic plate, then twist the
screws to secure. Connect the other end to the transformer.
1.
2.
3.
Transformer
Transformer
View
Right
Angle
Adjustment
View
Left
Transformer
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