VTech IS7121 Installationsanleitung PDF herunterladen (Seite 15)

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.

Chime/buzzer of

wired doorbell

Transformer

Rear Trans

Front

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