The same temp sensor reports 2 different temperatures

[voltagoo 0]

 

Hello,

I have 2 heatcontrollers placed in the same room (Firmware 4.4). They're both connected to the same external temperature sensor. 
The thing I cannnot clearly understand is why do they show different temeratures...
Is there a way I can verify the heatcontrollers are connected to the same sensor correctly?

 

 

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[Guest Cosminium]

I revive this thread because I have the same problem: I mounted 4 heat controllers and two external sensors (each paired with two heat controllers).

There are differences between both sensors temperature displays (although when I took the screenshot, one of the sensor shows the same temperature).

Any idea what causing this? A difference of 0.1 degree is not so big issue but more than 1 degree is!

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