A: If you need the controller stop at 50 degrees, you can use ON/OFF control mode,
set CtrL=0 to enter into ON/OFF control mode, for example, set SV=48, DF=2, when the
Temperature is lower or equal to SV-DF=46, the relay on, start heating, when the temperature is higher or equal to SV+DF=50, the relay off, stop heating.
You needn’t set PID if you use the ON/OFF Control mode, you set the parameters step by step, when select control mode , you need to set CtrL=0, then you can set the rest parameters you need.