M5Stack Kmeter Unit w/ Thermocouple Temperature Sensor (MAX31855)

M5StackSKU: RB-Mst-248
Manufacturer #: U133

Price  :
Sale price $20.90

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Stock  :
In stock, 7 units

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  • M5Stack Kmeter Unit w/ Thermocouple Temperature Sensor (MAX31855)
  • Offers a K-type thermocouple sensor
  • Designed for K-type thermocouples
  • Adopts a general standard flat interface
  • Measuring range of -200 to 1350 °C
  • Communication interface: I2C

The M5Stack Kmeter Unit w/ Thermocouple Temperature Sensor (MAX31855) is a K-type thermocouple sensor with an I2C communication interface. The hardware adopts ESP32-C3 main control + MAX31855KASA+T 14bit thermocouple digital conversion chip. The internal ESP32-C3 integrated firmware communicates with the thermocouple digital IC to process the raw data and expose the I2C interface.

  • 1x Kmeter Unit
  • 1x K-type Thermocouple probe (measuring range -50 to 250 °C, wire length 1 m)
  • 1x HY2.0-4P Cable (20 cm)


  • 56 x 24 x 9.6 mm (L x W x H)
  • HY2.0-4P Cable Length: 20 cm
  • ESP32-C3 (support I2C firmware update)
  • Power consumption 5 V at 24 mA
  • Communication protocol: I2C, device address: 0x66
  • Weight: 9.3 g


  • 14 Bit ADC
  • 0.25 °C resolution, accuracy ±2%
  • Support probe type: K type
  • Support the measurement range of the connected probe -200 to 1350 °C

Standard probe

  • K-type thermocouple
  • Measuring range: -50 to 250 °C
  • Line length: 1 m
  • Thermal response time: <1s
  • Interface: standard flat copper plug

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