This Gravity I2C high-temperature sensor pairs a signal amplification module (MAX31855K) with a stainless steel sheathed K-type thermocouple probe for measuring temperatures up to 800 °C. The module converts the thermocouple's millivolt signal to a 14-bit digital reading over I²C, with cold-junction compensation built in.

The Gravity I²C interface makes wiring simple — just connect power, ground, SDA, and SCL to any 3.3 V or 5 V microcontroller. The module supports the full K-type range of −270 to 1,372 °C (with a compatible probe), and the included probe is rated to 800 °C.

Key Features

• MAX31855K Chip – 14-bit, 0.25 °C resolution digital temperature measurement
• Wide Temperature Range – Module supports −270 to 1,372 °C; included probe rated to 800 °C
• Gravity I²C Interface – Simple connection to Arduino, Raspberry Pi, and other controllers
• 3.3 V / 5 V Compatible – Works with a wide range of boards
• Swappable Probe – Compatible with any standard K-type thermocouple

Specifications

Signal Amplification Module:

• Input Voltage: 3.3–5.5 V
• Temperature Range: −270 to 1,372 °C
• Resolution: 0.25 °C
• Accuracy: ±2 °C (−200 to 700 °C), ±4 °C (700 to 1,350 °C)
• Interface: Gravity I²C (logic level 0–3.3 V)
• Dimensions: 44 × 22 mm

K-Type Thermocouple Probe (included):

• Temperature Range: Up to 800 °C
• Accuracy: ±2.5 °C
• Probe Length: 50 mm
• Probe Diameter: 4 mm
• Wire Length: 1.5 m
• Properties: Waterproof, corrosion-resistant, high-temperature resistant

Ideal For

• Electric ovens and furnaces
• Pottery kilns
• Gas flame temperature measurement
• Industrial and scientific high-temperature monitoring

Resources

• Product Wiki