Arduino Thermocouple Multiplexer Shield (K - MAX31855K) No Headers
(0 review)

SKU : KTA-259K
Quantity on Hand : 13
Skill Level : Assembled and Tested

Buy 10, Get 5% Off!
Buy 100, Get 10% Off!


54.95 54.95 USD 54.95


Not Available For Sale

This combination does not exist.

Add to cart

Description: The KTA-259v5 Thermocouple Multiplexer Shield is designed to easily allow multiple high temperature readings with an Arduino control board. With the new version there are multiple advantages over the old KTA-259, namely, wider temperature range including below 0°C, higher accuracy, higher resolution and ability to use more thermocouple types (dependent on model).

Screw terminals are provided for thermocouple connections as thermocouple wires can not be soldered.

Note: The board ships as pictured, without Arduino headers. You can use standard brea-away headers, or the stackable headers. The board accepts both standard headers and R3 headers.

  • Automotive – Engine, Exhaust and Brake temperatures are higher than most temperature sensors can handle, but within the range of Thermocouples.
  • Ovens, Furnaces and Kilns – At temperatures where other temperature sensors will not operate.
  • Freezer or Cryogenic monitoring – Where temperatures are well below 0°C.
  • Chemical Processes – Where corrosive chemicals may damage probes or reach high temperatures thermocouples are more readily available for such processes.
  • Multi-Zone Temperature Monitoring, Data Acquisition or Logging Systems– With cheap readily available thermocouples.
Additional Details:
SKU / Part NumberThermocouple TypeICMeasured Temperature RangeThermocouple Maximum Temperature Range [1]
KTA-259KKMAX31855K-200°C to +1350°C-270°C to +1372°C
KTA-259JJMAX31855J-40°C to +750°C-210°C to +1200°C
KTA-259NNMAX31855N-200°C to +1300°C-270°C to +1300°C
KTA-259SSMAX31855S+50°C to +1600°C+50°C to +1768°C
KTA-259TTMAX31855T-250°C to +400°C-270°C to +400°C
KTA-259EEMAX31855E-40°C to +900°C-270°C to +1000°C
KTA-259RRMAX31855R-50°C to +1770°C-50°C to +1768°C
KTA-259[2]KMAX66750 to +1024°C-270°C to +1372°C
KTB-259[2]KMAX66740 to +128°C-270°C to +1372°C

[1] This is the range of temperatures that a thermocouple of this type can measure, the Measured Temperature Range is the actual range the KTA-259 can digitize.

 [2] KTA-259 and KTB-259 are discontinued and are included for reference only.


  • Add up to 8 Thermocouples to an Arduino
  • Cold Junction Compensated Output
  • K, J, N, S, T, E or R Type thermocouples supported dependent on model
  • 0.1” (2.54mm) Pitch Screw Terminals for Thermocouple connection
  • 14-bit 0.25°C Resolution
  • Nominal ±2°C accuracy[1]
  • Based on MAX31855 Cold-Junction Compensated Thermocouple-to-Digital Converter and ADG608 Multiplexer IC
  • 13 x 8 Prototyping Area with Analog and Power pins
  • Chip Select Pin Jumper Selectable means multi SPI shield compatibility
  • Combine with SD card shield for powerful Temperature Logging
  • Powered from 3.3V Arduino Pin, 5V compatible
  • Selection Guide:

Documentation and Downloads