<Display and Buttons>
1. pH or ORP reading
2. Calibration mode
3. Calibration error indicator
4. HI relay energized LED indicator
5. LO relay energized LED indicator
6. Auto temperature compensation(ATC) or Manual temperature compensation(MTC)
7. Temperature reading and unit
8. unit of pH or ORP reading
1. Turn on/off the controller
2. Enter calibration mode
1. Switch pH and ORP mode
2. Press and hold to enter setting mode
3. In setting mode, press to store each setting
1. In measurement mode, adjust temperature value of MTC
2. In setting mode, adjust each parameter
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