How long will settings be held with power off to Shelly 1?

    HI

    I have a Shelly 1 wired to some outside lighting that I don't use all year round. It is connected by means of a plugged socket.

    I had a lot of problems getting it connected to the Cloud and getting the Schedules programmed.

    So I don't want to have to program it again.

    My question is how long with programmed Schedules and other settings remain with no power on the unit?

    Thanks