Method and apparatus for installing telephone intercom-voice...

Details Method and apparatus for installing telephone intercom-voice... Method and apparatus for installing telephone intercom-voice...

H - Electricity

04

M

H04M 7/10 (2006.01) H04M 1/60 (2006.01) H04M 7/14 (2006.01) H04M 9/00 (2006.01) H04M 11/02 (2006.01) H04M 3/533 (2006.01)

Patent

CA 2270543

A doorbell response system (19) can be retrofit in an existing doorbell system without requiring the incorporation of new wiring in the existing doorbell system.

Cette invention se rapporte à un système de réponse associé à une sonnette (19) que l'on peut adapter à un dispositif de sonnette existant sans que cela nécessite l'installation d'un nouveau câblage dans ledit dispositif de sonnette existant.

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