mts200 second temp entity

[schoppfe]

Can someone of you explain to me the second temperature entity?

After integration of my mts200 thermostat I noticed a second temperature entity. The first one updates regularly and seem to match the selected sensor of the device (air or ground) with an accuracy of 0.1 °C. The second sensor instead hasn’t changed for hours and seem to have an accuracy of only 0.5 °C.

from 17.11. 12:00 to 18.11. 00:00 I switched from air to ground sensor and then back.