Update Bosch BTH2 - Add Input for Remote Temperature

[sestriel]

Working improvements from @compujuckel ( #5297 )

• Add input for remote temperature sensor. Setting remote_temperature will override the value of local_temperature.
• Add displayed_temperature to choose which temperature is shown on the thermostat display

Both Features are working well - as expected, using them now for more than 4 Weeks.

[Koenkk]

Cool, thanks!

[mldytech]

@sestriel
Hi, sorry if this is the wrong place to ask - and thanks for your awesome work.

Is it possible to adjust the remote_temperature in 0.1 steps? Right now, it seems that it's only rounded to 0.5 steps.

Best regards,
mldy

[sestriel]

Hello @mldytech, you mean when the local temperature (remote) is showed on the device itself?.
Its the TRV itself that only goes in .5 steps - its just rounded for the display.