MAX6675 K-Type Thermocouple Temperature Sensor Module – 0°C to 800°C, SPI Output
Product Description
The MAX6675 K-Type Thermocouple Temperature Sensor Module is designed for measuring high temperatures in electronics, industrial monitoring and DIY automation projects. It uses the MAX6675 thermocouple-to-digital converter IC to convert temperature readings from a compatible K-type thermocouple probe into digital data for a microcontroller.
The module includes cold-junction compensation, which helps account for the temperature at the thermocouple connection, and thermocouple break detection to identify an open probe connection. Its SPI-compatible serial output makes it suitable for interfacing with Arduino, ESP32 and other compatible microcontroller platforms.
With a stated measurement range of approximately 0°C to 800°C for this product listing and a resolution of 0.25°C, the MAX6675 is useful for monitoring heaters, ovens, hot surfaces, temperature-controlled systems and other high-temperature applications.
Key Features
High-Temperature Measurement: Suitable for applications requiring measurements up to approximately 800°C with the supplied probe and module.
K-Type Thermocouple Support: Designed for use with a compatible K-type thermocouple.
Digital Temperature Output: Converts thermocouple signals into digital temperature readings.
0.25°C Resolution: Provides temperature readings in nominal 0.25°C increments.
Cold-Junction Compensation: Compensates for the reference-junction temperature.
Thermocouple Break Detection: Helps identify a disconnected or open thermocouple.
SPI-Compatible Interface: Supports serial communication with compatible microcontrollers.
Easy Integration: Suitable for temperature monitoring, data logging and automation projects.
Technical Specifications
Parameter | Specification |
Module Name | MAX6675 K-Type Thermocouple Sensor Module |
Converter IC | MAX6675 |
Sensor Type | K-Type Thermocouple |
Measurement Range | Advertised as approximately 0°C to 800°C |
Converter Range | Nominally 0°C to 1024°C digital range |
Resolution | 0.25°C |
Advertised Accuracy | ±1.5°C; depends on operating conditions and probe |
Interface | SPI-compatible serial output |
Cold-Junction Compensation | Built-in |
Thermocouple Break Detection | Supported |
Supply Voltage | Advertised as 3V–5.5V; verify module specifications |
Storage Temperature | -20°C to +80°C (as supplied) |
Applications
High-temperature monitoring
Oven and furnace temperature measurement
Heater and hotplate monitoring
Temperature-controlled systems
Industrial automation prototypes
3D printer and heating experiments
Arduino and ESP32 temperature projects
Laboratory and educational electronics
Temperature data logging
Package Includes
1 × MAX6675 Thermocouple-to-Digital Converter Module
1 × K-Type Thermocouple Probe
Important Notes
Measurement range: Although the MAX6675 converter has a nominal digital measurement range extending to 1024°C, the listing's specified operating range is approximately 0°C to 800°C. The supplied probe's rating also affects the usable range.
Negative temperatures: The MAX6675 is designed for positive-temperature measurement and does not provide normal negative-temperature readings.
Resolution versus accuracy: A 0.25°C resolution does not mean the measured temperature is accurate to ±0.25°C. Overall accuracy depends on the converter, thermocouple, installation and calibration.
Voltage compatibility: Check the breakout board's actual supply rating and output logic levels before connecting it to a 3.3V ESP32 or a 5V Arduino.
Wiring: Observe the thermocouple polarity and the module's pin labels. Use suitable thermal protection when measuring hot equipment.
The MAX6675 K-Type Thermocouple Module is a practical choice for makers, students and developers who need digital high-temperature measurement in embedded electronics and automation projects.
