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This seems to look very similar to generic ali express sensors:

ie. Quick search:

https://www.aliexpress.com/item/1005005944910617.html

Generally things without user manuals, or proper specifications are either directly from there, or rebadged from there.

Ali express has the Bosean, and the specs appear to be different from the link you found. https://www.aliexpress.us/item/3256803168407076.html

I see multiple knock-offs of the version you linked, the packaging looks different than the Bosean. Is the lack of a brand or company name printed on the device a potential clue about which one’s a knock-off?

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