Schick with many sensors

But unfortunately, no clock. That's why I 0.5 star deduction. There are also 0.5 star deduction for inaccurate measurement sensors. I have two sensors outside hung on the wall, both in the shade. After a few days of observation, I was able to demonstrate that the sensors have constant 2 degrees difference. Control measurements with Voltcraft thermometers have shown that the sensor exactly 1 degree extra measures, the other moment during 1 degree attaches too little. The Voltcraft meter has namely displayed at both measuring points, the same temperature. Okay, now that I know it, I can live with.