I will look on this device "extra's" (like setting up the humidity and temperature alarm boundaries, which I suppose control the smiley symbol on the display) later, when I have a chance.
It is still not clear for me why the battery status of TS004F switches is not reflected correctly in HK.
When you look at the Homkit integration app, is there an option to disable the illumination / Lux for this device?
Try excluding the illuminance.
Will look at this someday later.