What is the purpose of the doorbell, which allows me to connect my NON-WIFI monitor?

What is the purpose of the doorbell, which allows me to connect my NON-WIFI monitor?


The doorbell consists of two wires (BELL, GND) that would go to the push button at the entrance to the home itself so that the monitor plays a different bell if called from the outdoor panel or from the doorbell itself, so we know that the visitor has already arrived at our door.



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