Precision MAX6675 Module + K Type

Thermocouple Temperature Sensor for Arduino but actually using 2M Wire K Type Thermocouple
Temperature Measuring Probe Sensor

Arduino Nano to read the sensor and control of to RGB LED.

Please note that the method does appear not give a true temperature measurement. Particulary when the Heat Bedcools down.

I plan to change the MAX6675 Module to a different one.

MAX6675 Module works quite well but not well enough for me.