And there's a supplied screen! Ha ha.
And now that I'm reminded, swapping them about would drop the 1, 3 & 24 hour averages if I power it down.
(That's the Presumption).
Always did consider that an issue with values retained & averaged in the device regarding power interruptions.
On the screen, I think I can manage to swap mine live.
Needs to be a priority with our current Summer insect activity.