3 Kegland Rapt devices have different temp readings

[BandonBrewingCo]

Top left corner are the two temp probes and the yellow cap of the pill (unplugged) so all reading from the same place.

How the hell am I meant to calibrate???

 

[BandonBrewingCo]

After some time after plugging out the pill is coming down to closer to the probes.

Still have:

BLE: 22.0
Rapt temp controller probe: 21.0
Pill: 22.8

The first 2 are consistently 1C apart which is interesting. I suspect the pill will meet one of them given enough time to cool down

 

[whoaru99]

What is the specified accuracy of each one, and what is the standard you're using for the reference?