Logic Masters Deutschland e.V.

Previous Dutch Flat Mate Puzzles
This has been a weekly series since '18 Oct 23'. Here is a spreadsheet link for all the previous puzzles in the series, which also has a few teasers for upcoming constraints/guest setters in the series (subject to change).
This alternative link offers a limited LMD search for Dutch Flat Mates.

Special Thanks
The inspiration for this episode is a Richard puzzle, with the wonderful Easy Peasy Sudoku Leftover (05) - Thermometers - Removed bulbs.

To play the puzzle, please click the image:

Initial Setter Difficulty: 2 / 5

Normal Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.

Dutch Flats
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.

Bulbless Thermos
The digits in a thermometer are, from the bulb to the/each end, all different and placed in increasing order. The bulbs are removed and placing them is part of the puzzle. Bulbs can be placed on every place on a grey line; in case the bulb is on an end, the line forms one thermometer, in other cases exactly two.

Hint to start

Column 8 has a lot of early secrets to give, especially big digits.