t.
Cool down:
Press button once ,the temperature window will show the set temperature to down 1℃. hold button for at least one second, the set temperature will cool down rapidly until down to the set temperature you did set.
After parameter data is set,keep hold CH1 button to up or down temperature and save it.similarly, keep hold CH2 or CH3 button to set the storage temperature and save them.
Do bring out the memory temperature,press CH1 button (less than 1 second) and bring up the saved d