Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference. The MAX31855 does everything for you, and can be easily interfaced with any microcontroller, even one without an analogue  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 or perfboard).

Note this module uses MAX31855 chip and not MAX6675.

Specification:
- Temperature measurement range: -270°C to +1800°C
- Input Voltage Range: 3V to 5V
- Accuracy: ±2°C to ±6°C
- Interface: SPI (Digital)
- Compatibility: any K-type Thermocouple

Package Contents:
- 1x MAX31855 Thermocouple Sensor Module
- 1x 5-Pin 2.54mm Header
- 1x 2-Pin Thermocouple Probe Terminal Block