Hi,
I would like to make our door bell "smart" using a Shelly device. I am an IT guy and my knowledge of electrical installations and their working is unfortunately very limited. Main goal is to be able to detect if the bell is ringing, not to be able to ring the bell from the Shelly. The challenge is that the power supply, the switch and the bell are in three different locations, and I only have a power supply for the Shelly device where the power supply is located. The bell only has the switched connection and no permanent power supply, and the switch only has one wire, the one that is switched:
Is there any way I can detect at the location of the power supply if the circuit is closed? Maybe using a Shelly Uni? The circuit for the door bell is 12v, so it could be used to power a Uni or a Plus 1. At the location of the power supply there is also a 220v supply that could be used, though I'd prefer to stay in the "safe" 12v circuit.
