So when I turned the outside thermometer next to the station or the internal thermometer, then there were always differences in temperature at least 0.7 to a maximum of 1.0 degrees available! It was mostly as 0.9 degrees difference.
I here had 2 other thermometers in the living room and which I know exactly how or inaccurate walking about, I had also to come to the conclusion that the internal thermometer (Station) indicates rather too little reality and the outside thermometer rather too much !
I also find the Techno Line WS 7002 Thermometers. ; Qid = 1406551572 & sr = 8-1 & keywords = technoline + WS + 7002
This is my experience about correct values, because I have yet compared to other thermometers.
Unfortunately, the WS 7002 is right in the middle of the inner thermometer and outdoor thermometer. So each about 0.5 degrees difference.
I also have the Hama RC 550 alarm clock, which is identical to the Technoline WT 195. Its built-in thermometer is about almost simultaneously with the Techno Line WS 7002. (max 0.1 to 0.2 degrees difference and not always)
So altogether, I regret to say I have expected that the Techno Line WS 9140 provides IT vernünfige values, just like the WS 7002 and the alarm clock!
2 stars I spend decency, because otherwise the station visually is very good and has the same found on the display and also the external sensor etc.