Internal temperature reading SPI data requires any 4 digital I/O pins 3.3 to 5v power supply and logic level compliant Works with any K, J, N, R, S, T, E, or B type thermocouple -210°C to +1800°C output in 0.0078125° resolution - note that many thermocouples have about ±2°C to ±6°C accuracy or worse depending on the temperature and type