MAX6675 Module with K-Type Thermocouple

Take accurate high-temperature readings well beyond the range of standard sensors with the MAX6675 Module and K-Type Thermocouple set. Built around Maxim’s MAX6675 cold-junction-compensated digital converter IC, this module reads the tiny voltage generated by the paired K-type thermocouple and outputs clean, ready-to-use 12-bit temperature data over a simple SPI interface, with no external calibration or complex signal processing required.

The module handles cold-junction compensation internally, automatically correcting for ambient temperature shifts to keep readings stable and accurate. It connects to a microcontroller using just three digital pins for the SPI-compatible interface (SO, SCK, CS), and the included K-type thermocouple probe attaches via screw terminals, with a threaded tip that makes it easy to mount to heatsinks, ovens, or enclosures for continuous monitoring.

This combo is a go-to choice for hobbyists and engineers working on 3D printer hot ends, reflow soldering stations, kilns, BBQ smokers, and other high-temperature industrial or DIY projects, since it measures far beyond what a typical NTC thermistor or DHT sensor can handle. It’s fully compatible with Arduino, ESP32, ESP8266, STM32, and Raspberry Pi, with well-supported libraries available for straightforward integration.

Specification:

• Converter IC : MAX6675
• Thermocouple Type : K-Type
• Temperature Range : 0°C to 1024°C
• Temperature Resolution : 0.25°C
• Accuracy : ±1.5°C (typical)
• Communication Interface : SPI (SO, SCK, CS)
• Operating Voltage : 3.0V to 5.5V
• Operating Current : Approx. 50mA (max)