How do I set a retained variable down to 1 decimal place

It needs to change at least once after you create the automation. Then it starts counting.

Will give it another go

Yep, that worked, once again many thanks

One last thing:-
If it needs to see data once, what would happen if the sensor was down after a power cut, which is waht happened last time?

Only once after you create the automation.

Thank you

Regards Dave

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