This is a daughterboard specifically designed for the Duet 2 and Duet control boards that allows two Thermocouples to be attached.

The Thermocouple Daughter Board is compatible with all Duet 2 and 3 mainboards, along with the Expansion 3HC.

This board is based on the MAX31856 so several types of thermocouples (K, J, N, R, S, T, E, and B) are supported, The thermocouple type is set in firmware.