VTech IS7121 - Limited Warranty Details; Warranty Coverage and Service Procedures

15
Option 1: Ring the front doorbell of the existing wired
doorbell and the IS7121 doorbell simultaneously.
Using another wire, slide one end of the metal part
underneath the metallic plate on the doorbell, then connect
the other end to the Trans terminal of your chime/buzzer unit
of the wired doorbell.
4.
View
Right
Angle
Adjustment
View
Left
Chime/buzzer of
wired doorbell
Transformer
Rear Trans
Front