... be RTD or thermocouple 2.PID output pt100 temperature sensor controller1. Product HighlightsThermocouple: T, R, J, B ... auto-tuning, press and hold (>) until “AT” indicator blinks, which indicates autotuningis in progress. When auto ... -tuning finishes, the “AT” indicator light turns off. Now newlycalculated PID parameters are ... operation mode.XMT7100 pt100 temperature sensor controller