MAX31855 K Type Thermocouple Breakout Board Temperature Measurement Module For Arduino Feature: Thermocouples are very sensitive, requiring a good amplifier with a cold-junction compensation reference. This product does everything for you, and can be easily interfaced with any microcontroller, even without an analog input. This breakout board has the chip itself, a 3.3V regulator with 10uF bypass capacitors and level shifting circuitry, all assembled and tested. Comes with a 2 pin terminal block (for connecting to the thermocouple) and pin header (to plug into any breadboard). Description: Measurement temperature range: -200 °C to 1350 °C SPI interfaces, high-speed transmission The input voltage: 3-5v DC Direct digital output temperature value, no amplifiers, no ADC 14-bit resolution, 0.25 degree temperature accuracy Note: Works with any K type thermocouple K thermocouples have about ±2°C to ±6°C accuracy Internal temperature reading 3 to 5v power supply and logic level compliant! SPI data output requires any 3 digital I/O pins.