Milwaukee Smart PH/ORP Controller - MC125

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  • Regular price $448.00


Milwaukee MC125 pH/ORP Controller Monitor is a smart device that automatically monitors and control pH/ORP levels and alerts you to any drastic changes in pH/ORP that occurs in the aquarium waters.

Use the Milwaukee MC125 pH/ORP Controller Monitor to keep pH/ORP within healthy levels to ensure the safety of your aquarium inhabitants.

The Milwaukee Instruments MC Controllers have a user-selectable set point and a visual Power-Activated LED notification light. Power to the controller box is turned on when the reading is Above or Below (user-selectable) the selected set point. These MC Controllers are ideal for CO2 or ozone dosing.


  • User-selectable Hi/Low Set Point
  • Manual 2 points calibration
  • Visual LED alarm
  • Supplied with 12 VDC adapter and mounting kit
  • 1 power plug for CO2 dosing
  • 1 power plug for Ozone (O3) dosing
  • Double junction pH electrode and platinum ORP electrode (BNC connector)


The specification of Milwaukee MC125 pH/ORP Controller Monitor:

pH Range 0.00 - 14.00 pH
ORP Range +/- 1000mV
pH Resolution 0.01 pH
ORP Resolution +/- 1 mV
pH Accuracy +/- 0.2 pH
ORP Accuracy +/- 5 mV
Calibration Manual 2 points
Alarm Active when reading is higher or lower than set point
pH Dosing Contact 1 power plug for CO2 dosing
ORP Dosing Contact 1 power plug for O3 dosing
pH Electrode MA911B/2 (included)
ORP Electrode MA921B/2 (included)


The package includes:

  • pH/ORP Controller Unit (factory calibrated for ORP)
  • 12 VDC adapter
  • Mounting kit
  • Probe
  • Probe holder
  • Starter calibration solution for pH/ORP