MAX6675 K-Type Thermocouple Temp Sensor Module SPI for Arduino

MAX6675 K-Type Thermocouple Temperature Sensor Module – 0°C to 1024°C SPI Interface

Take precise, high-range temperature measurements with the MAX6675 K-Type Thermocouple Temperature Sensor Module. Designed for makers, engineers, students, and hobbyists, this compact board delivers accurate readings from 0°C to 1024°C via a simple SPI serial interface — making it ideal for Arduino, Raspberry Pi, and other microcontroller projects.

Made in Mainland China.

Key Features

• High-Precision Measurement: Achieves 0.25°C converter temperature resolution for accurate, reliable readings across its full range.
• Fast Response Time: Designed for real-time temperature monitoring and control applications where speed matters.
• Simple SPI Interface: Easy 5-pin connection (GND, VCC, SCK, CS, SO) for seamless integration with Arduino and other microcontrollers — no complex wiring required.
• Wide Temperature Range: Measures from 0°C to 1024°C, covering everything from refrigeration to high-heat industrial applications.
• On-Chip Cold End Compensation: Built-in compensation ensures accuracy without the need for external reference circuits.
• Thermocouple Disconnection Detection: Automatically detects open or disconnected thermocouple leads for added safety and reliability.
• Low Power Consumption: Operates at just 50mA with a wide input voltage range of 3.0–5.5V DC — compatible with both 3.3V and 5V systems.
• High Impedance Differential Input & ESD Protection: 2000V ESD signal protection for robust performance in challenging environments.
• Compact Size: At just 25×15×12mm, it fits easily into tight spaces and enclosures.

Technical Specifications

• IC: MAX6675
• Thermocouple Type: K-Type
• Temperature Measurement Range: 0°C – 1024°C
• Resolution: 0.25°C
• Interface: SPI (GND, VCC, SCK, CS, SO)
• Supply Voltage: DC 3.0V – 5.5V
• Operating Current: 50mA
• Operating Temperature Range: -20°C – 85°C
• ESD Signal: 2000V
• Module Size: 25 × 15 × 12mm (0.98 × 0.59 × 0.47 in)
• Thermocouple Wire Length: ~50cm, with metal shielding layer for anti-interference
• Screw Head Specification: M6
• Origin: Mainland China

Applications

• Arduino / Raspberry Pi DIY electronics projects and prototyping
• Room temperature monitoring, HVAC, and automotive air conditioning systems
• Refrigerators, freezers, and low-to-medium temperature drying boxes
• Grain bins, storage tanks, telecom equipment rooms, and power equipment facilities
• Industrial equipment in confined spaces: axial tiles, cylinders, spinning machines
• Student projects, research lab experiments, and prototype development

Important Notes

⚠️ The included thermocouple is rated for temperatures up to 800°C. Exceeding 800°C may result in inaccurate readings or damage to the thermocouple. If you need measurements between 800°C and 1024°C, please source a separately rated high-temperature thermocouple.

Slight color differences may occur due to varying monitor settings. Please allow ±1–2cm measuring deviation for manual measurements.

Package Contents

• 1 × MAX6675 Temperature Sensor Module Board
• 1 × K-Type Thermocouple (50cm wire with metal shielding)

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For more information on electrical component safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: List of temperature sensors

Frequently Asked Questions

Q: Is the MAX6675 temperature sensor module compatible with Arduino?

A: Yes! The MAX6675 module communicates via a standard SPI interface (SCK, CS, SO pins), making it directly compatible with Arduino Uno, Nano, Mega, and most other Arduino boards. Simply connect the 5 pins and use a widely available MAX6675 library to start reading temperatures in minutes.

Q: What is the maximum temperature the included K-type thermocouple can measure?

A: The included K-type thermocouple is rated for up to 800°C. While the MAX6675 chip itself supports readings up to 1024°C, exceeding 800°C with the included thermocouple may result in inaccurate measurements or damage. For temperatures above 800°C, a separately rated high-temperature thermocouple is recommended.

Q: Can this module work with 3.3V systems like Raspberry Pi or ESP32?

A: Absolutely. The MAX6675 module supports a wide supply voltage range of 3.0V to 5.5V DC, making it fully compatible with both 3.3V systems (Raspberry Pi, ESP32, ESP8266) and 5V systems (Arduino Uno, Mega).

Q: Does the module detect thermocouple disconnection?

A: Yes. The MAX6675 chip includes built-in thermocouple disconnection detection. If the thermocouple becomes open-circuited or disconnected, the module will output a specific fault value so your code can detect and handle the error gracefully.