DFRobot Gravity I2C K-Type Thermocouple High Temperature Sensor

Standard silicon-based temperature sensors like the DS18B20 or DHT-series top out well under 150°C, nowhere near enough for genuinely hot environments - furnace monitoring, exhaust temperatures, industrial process heat. A K-type thermocouple solves that by generating a small voltage directly from the temperature difference across two dissimilar metal junctions, a physical principle that keeps working reliably at temperatures that would destroy a silicon sensor outright.

What makes this specific module practical rather than just a bare thermocouple wire is the signal amplification board doing the hard part - converting the thermocouple's tiny, nonlinear voltage output into a clean, calibrated I2C reading, so a microcontroller reads a temperature value directly rather than needing its own cold-junction compensation and linearization math. The probe itself is waterproof and corrosion-resistant with a 1.5m lead, letting the sensing tip reach into a genuinely hot or harsh location while the electronics stay a safe distance away.

Common uses are furnace, kiln, or oven temperature monitoring projects, exhaust or engine temperature logging, and any industrial or DIY application needing reliable temperature data well beyond the range of standard digital temperature sensors.