MAX6675 K-Type Thermocouple Sensor Module SPI – Up to 1024°C

MAX6675 K-Type Thermocouple Temperature Sensor Module

The MAX6675 K-Type Thermocouple Module is a compact, high-accuracy digital temperature sensing solution designed for makers, engineers, hobbyists, and anyone who needs precise thermal readings in DIY electronics projects. Capable of measuring temperatures up to 1024°C, this module delivers reliable data via a simple SPI serial interface — making it effortless to integrate with Arduino, Raspberry Pi, ESP32, and other microcontroller platforms.

Whether you're monitoring a kiln, 3D printer hot end, industrial equipment, or a custom electronics build, this sensor module gives you the accurate real-time temperature data you need.

Key Features

• Wide Measurement Range: Reads temperatures from 0°C up to 1024°C with high accuracy
• Simple SPI Serial Interface: Easy digital output directly readable by any SPI-compatible microcontroller
• On-Chip Cold-End Compensation: Built-in compensation circuitry within the MAX6675 chip ensures accurate readings regardless of ambient temperature fluctuations
• 12-Bit Resolution: Provides temperature readings in increments of 0.25°C for precise monitoring
• K-Type Thermocouple Included: Comes with a 15mm K-type thermocouple probe ready for immediate use
• Compact & Breadboard-Friendly: Small module size makes it ideal for prototyping and space-constrained builds
• Plug-and-Play Ready: Works right out of the box with widely available libraries for Arduino and similar platforms

Technical Specifications

• Chip: MAX6675
• Sensor Type: K-Type Thermocouple
• Temperature Range: 0°C – 1024°C
• Resolution: 12-bit (0.25°C increments)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 3.3V – 5V
• Probe Length: 15mm
• Color Options: Available in 3 color variations

What's in the Box

• 1 × MAX6675 Thermocouple Module
• 1 × K-Type Thermocouple Probe (15mm)

Perfect For

• Arduino and ESP32 temperature monitoring projects
• 3D printer hot-end temperature sensing
• Kiln, furnace, and oven temperature tracking
• Industrial and laboratory electronics builds
• DIY electronics prototyping and learning

Looking for more components for your electronics projects? Check out the ESP32-S3 Core Board N8R2 Compatible with DevKitC-1 — a powerful microcontroller board that pairs perfectly with this sensor module. You may also enjoy our Round Aluminum Wire for DIY Projects for your next creative build.

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What temperature range can the MAX6675 K-Type Thermocouple Module measure?

A: The MAX6675 module can measure temperatures from 0°C up to a maximum of 1024°C, making it suitable for a wide variety of high-temperature monitoring applications such as kilns, 3D printers, furnaces, and industrial equipment.

Q: How does the MAX6675 module connect to a microcontroller like Arduino or ESP32?

A: The MAX6675 uses a standard SPI (Serial Peripheral Interface) serial protocol. It connects via three data lines (SCK, CS, SO) plus power and ground. Widely available Arduino and ESP32 libraries make reading temperature values straightforward, even for beginners.

Q: What is cold-end compensation and why does it matter for temperature accuracy?

A: Cold-end (or cold-junction) compensation accounts for the temperature at the point where the thermocouple connects to the module's circuit board. The MAX6675 chip performs this compensation internally, ensuring that the temperature reading you receive reflects the true temperature at the probe tip rather than being offset by the ambient temperature of your electronics setup.

Q: Is the MAX6675 module compatible with Arduino, Raspberry Pi, and ESP32?

A: Yes — the MAX6675 is compatible with any microcontroller or single-board computer that supports SPI communication, including Arduino Uno/Mega/Nano, ESP32, ESP8266, Raspberry Pi, and more. Plug-and-play libraries are freely available for all these platforms.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.