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It is compatible with the Creality CR6-SE where I installed it (photo 1) when the original plastic cracked.
The positives:
Because it has a dual gear, the extrusion is smoother and the filament gets less deep grooves. Also, the pressure is greater and I haven't had any jams yet.
Additionally, the path of the filament is visible and there is no need for any unscrewing to see if the filament passage is smooth.
The negatives:
To release the filament, continuous pressure on the lever is required. The old plastic remained "open" steadily without effort.
The filament passage hole is about 6 millimeters higher. So it is not aligned with the filament continuity sensor. It needs to be raised by 6 millimeters. It's not difficult; it just requires two slightly longer screws and 6-millimeter washers/spacers (photo 2).
WARNING! Because the diameter of the gears is smaller than that of the old single gear, it is necessary to update the Steps per unit parameter of the controller. There are instructions on the web on how to do this (e.g., search calibrate e-steps).
After the above, I am very satisfied.

It works according to its specifications. It is very accurate, and the same light sources always provide the same measurements. The accompanying app allows for easy transfer of measurements (and spectra but in image format, not a table with relative intensities per wavelength) to a personal computer.
Attention! It cannot be used as a regular external light meter for a camera! Suitable for studio work (controlling and adjusting lighting and filters) and for outdoor shots to achieve accurate characterization of the color parameters of the existing lighting so that subsequent processing can accurately correct unwanted deviations.
Extremely useful for setting up professional lighting: displays, art and product exhibitions, performances, etc.

It works according to its specifications.
The 4 connection wires are very thin and seem fragile. They require caution.
It is accurate but exhibits (like most load cells) some hysteresis. After removing a weight of 50 g, it does not return exactly to zero but to 0.007 to 0.01 g.

In decent packaging with protection from electrostatic charges.
Absolutely compatible with Arduino IDE 2.3.2.

The nominal output voltage applies only when the output current is equal to the nominal. When operating at no load or with a lower output current than the nominal, the output voltage is significantly higher than the nominal. Pay attention to the operating voltage of the filter capacitors that follow! Otherwise, it is a very decent construction that can operate continuously without overheating and without buzzing.

It meets the specifications.
Fits the R7S socket without any issues.
Operates without overheating.
It is too early to confirm its lifespan.

Performance according to specifications. It is connected within an HP Z2 G9 workstation as a second disk after a 1 TB SSD.
When it is operating, it makes a periodic clicking sound every few seconds.
It has not presented any issues, but it has only been functioning for a few months.

I confirm the excellent sharpness throughout the image even at f 1.8. The out-of-focus image (bokeh) is extremely smooth without nervousness. Out-of-focus point lights remain circular. If you like portraits with the model standing out impressively clear in front of a blurry background, this lens will thrill you. The depth of field at f 1.8 is such that you don't have to worry at all about the background. The plena can make disappear any detail that might distract the viewer's attention! At 47 Mpixels resolution, a portrait with shoulders shows skin pores, eyelashes and eyebrows hairs, and every small or large wrinkle so much, that it may need some sharpness reduction processing! The geometry of the faces looks better than that given by 85 mm lenses. The focus is not instantaneous but almost always precise. With the Z7 II, the eye recognition capability is fully utilized (and selection of the one that interests us) in humans and animals, tracking them when they move or even when they are momentarily not visible, and maintaining focus on them constantly and accurately! Despite the weight (almost 1 Kg) and the price, I believe it is worth both the effort of carrying and the expense.