The accuracy of the standard  temperature-sensors is as follows:
+/- 0,5 °C  [0...80°C] 
+/- 1,0 °C  [-20...100°C] 
+/- 2,0 °C  [-55...125°C]

For  a  better  accuracy we offer in the climatic chamber calibrated Sensors. .
Please, contact us for further informations.

The cable differs depending to your maximum temperature.