Question Author
Our tree is in the (unheated) conservatory so we have to open the patio door and go to the tree where the control box is, to change the sequence thing.
It would be far easier to just switch the blooming thing on at the socket which is just inside the patio door.
We can’t leave the patio door even slightly open due to the draft of freezing cold air which whooshes through. And that wouldn’t work anyway as the flashing stuff is controlled by the box which is next to the tree, wouldn’t make any difference if it was in an extension flex.
It’s obviously a third world problem..or one for those of us who aren’t as agile as we used to be.