MAX31855 K-Type Thermocouple Module with SPI Interface
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Prices updated: 12 Oct 2026
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About this product
A breakout module built around the MAX31855 thermocouple-to-digital converter, designed for K-type thermocouple probes. It reads cold-junction compensated temperature over a 3-wire SPI interface, with a listed range from -200 °C to 1350 °C. Suitable for high-temperature sensing in ovens, kilns and heating projects.
Specifications
- Supply voltage
- 3.3 V to 5 V
- Interface
- 3-wire SPI
- Accuracy
- 0.25 °C
- Thermocouple type
- K type
- Measurement range
- -200 °C to 1350 °C
Frequently asked questions
How do I wire it to a microcontroller?
Connect VCC and GND for power, then connect SCK, CS and SO (MISO) to the microcontroller's SPI pins. Attach the K-type probe to the T+ and T- terminals. Verify the silkscreen labels on your board.
Does the probe need to match the module's range?
Yes. The module range is -200 °C to 1350 °C, but the thermocouple probe you use must also be rated for the temperatures you measure.
