SHELLY - What model have RTC CLOCK inside?

    Good Morning,

    we need to create a project with many SHELLY relays, with specific time-base activity.

    My question is related to the hardware specific, if some models have dedicated RTC clock inside,

    capable to restore current date/time after a power loss, and (most important) without wifi

    again available, for re-sinc the internal calendar clock.

    ...and then proceed with normal execute, of the internal schedule stored.

    Kind Regards.

    Luigi P.

    Easiest might be to have them connected via WIFI to a Router, which then would only serve as time server only.

    There wouldn't necessarily a Internet connection needed.

    As long as the Router doesn't loose it's time, all the Shellies would have the same time base.

    Another option could be to set-up a Raspberry Pi with almoast any kind of Homeautomation application, such that the Shellies could get their time from there.