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  1. Parts
  2. /Sensors
  3. /Temp, humidity & pressure

K Type Thermocouple

OverviewWiringAlternates
K Type Thermocouple - DFRobot - SEN0139

K-type thermocouple for 3D printer hot-end temperature measurement, rated 0–800 °C with ±2 °C accuracy. Features a 125 mm stainless steel cable. Requires an amplifier IC (e.g., AD595 or MAX31855) for signal conditioning.

Parts tray full · 5 max · remove a part to add another
K Type Thermocouple — DFRobot — SEN0139

Offers

  • DFRobot$2.50

Offers

  • DFRobot$2.50

Pinout

Logical pinout · physical placement not verified
K TYPE THERMOCOUPLERed lead (+)Blue lead (-)
  • Red lead (+)lead-red

    K-type thermocouple positive lead; DFRobot product specification states cable colour code Red (+). Connects to a thermocouple amplifier/input, not directly to MCU GPIO.

    Type · AnalogVoltage · thermocouple millivolt-level sensor signal; temperature range 0-800°C per DFRobot specification
  • Blue lead (-)lead-blue

    K-type thermocouple negative lead; DFRobot product specification states cable colour code Blue (-). Connects to the negative thermocouple amplifier/input.

    Type · AnalogVoltage · thermocouple millivolt-level sensor return/reference
PinPositionTypeFunctionVoltage
Red lead (+)lead-redAnalogK-type thermocouple positive lead; DFRobot product specification states cable colour code Red (+). Connects to a thermocouple amplifier/input, not directly to MCU GPIO.thermocouple millivolt-level sensor signal; temperature range 0-800°C per DFRobot specification
Blue lead (-)lead-blueAnalogK-type thermocouple negative lead; DFRobot product specification states cable colour code Blue (-). Connects to the negative thermocouple amplifier/input.thermocouple millivolt-level sensor return/reference
Logical pinout · physical placement not verified
K TYPE THERMOCOUPLERed lead (+)Blue lead (-)

Pin details

2 connections
  1. Red lead (+)

    K-type thermocouple positive lead; DFRobot product specification states cable colour code Red (+). Connects to a thermocouple amplifier/input, not directly to MCU GPIO.

    AnalogVoltage · thermocouple millivolt-level sensor signal; temperature range 0-800°C per DFRobot specification
    lead-red
  2. Blue lead (-)

    K-type thermocouple negative lead; DFRobot product specification states cable colour code Blue (-). Connects to the negative thermocouple amplifier/input.

    AnalogVoltage · thermocouple millivolt-level sensor return/reference
    lead-blue

Start wiring

I2C · SPI · Single data line · 3.3 – 5 V · Breakout

Temp & humidity

165 other options

DHT/AHT sensors, SHT-series humidity chips, BMP and LPS barometers, BME combined sensors, DS18B20 probes, thermocouple amplifiers and non-contact MLX IR sensors — about 165 listings, very different accuracy classes.

View all 165
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