Shelly Qubino Wave 1PM - voltage on '0' in OFF state

  • Hello,
    I have bought two new Shelly Z-wave switches (Qubino Wave 1PM). I have plugin the into 230V AC network according diagram and added to my z-wave network. It's working like I expect, the switch on/off is working without problems.

    But I have noticed that in OFF state there is still measurable voltage (about 10V) between N and 0. I would expect that in OFF state the should be no voltage. This is the same for both switches. Does anybody have the same issue or know why is that?