OK, just for you, I put mine under the microscope and got the part number:
I can’t promise whether you would get the same. I guess that’s between you and the seller. Looking at the PCB, it has traces to accept 3 different sets of landing pads. My guess is they slot in whatever jellybean sensor they can find the cheapest and still meet whatever the seller’s advertised specs are.
If you don’t care about the LCD, then I’d recommend you’d get the bluetooth/zigbee version that takes 2x AAA’s and gives a minimum of 500 days runtime. They’re even cheaper! These CR2032 sensors will discharge faster than that. Maybe 6 months. Probably less if powered by the CR2032 battery that comes with it. If you like the LCD, though, some people on the forum here wire it to a battery with more mah’s. Example:
In your case, I get the sense this is probably all moot anyway, since it exceeds what you want/need and already have, but for the bigger hive mind, there it is.