It is quite normal that temperature sensors determine different values, but I am talking about a maximum of 1-2 degrees Celsius and not 10-15 degrees Celsius. Therefore temperature sensors for scientific purposes have to be checked and calibrated again and again.
@Osorkon has already given an explanation for the clearly too high internal temperature, which is plausible.
But then I have to ask myself about the sense of the internal temperature sensor. Especially because it has a measuring range of -55 to +126 degrees Celsius, at an operating temperature of 0 to +40 degrees Celsius!?
Is there any option in the advanced settings to calibrate the internal and external sensors? To set an offset? I have not found anything in the manual.
The low temperature values of the external sensors can actually indicate a defect (e.g. cable break, cold solder joint). Be it on the sensor itself or on the electronics of the SmartImplant.
Maybe you should contact Fibaro support to clarify some points.
