* Features

• pH/ORP Selection function between pH & ORP
• Convenient Automatic Calibration
  - Zero : pH 7
  - Span : pH 4 or pH 9
• Selection of the display which is suitable
  for using condition
  - MESTAR-H Series : LED Display
  - MESTAR-P Series : LCD Display (Back Light version)
• Isolated Analog Output
  - Process : Measured value of pH or ORP
  - Temp.(Option) : Measured value of temperature
• Output of dry contact point at
  maximum & minimum setting
  - Dead-Band setting
• Data backup in the EEPROM
• Self-Diagnostic function
• Temperature compensation of measured pH value (Option)
• Full-duplex communication of RS-422 Multi Drop (Option)