Milwaukee MW802 PRO 3-in-1 Combo Meter


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Measure pH, EC, and TDS all in one with the Milwaukee 3-in-1 Combo Meter. With just a single probe and meter the MW802 model helps you manage water quality by testing pH levels, electrical conductivity (EC), and total dissolved solids. This meter is simple to use, portable, and durable, it's the ultimate solution for hydroponic growers looking to master pH and nutrient management. Probe is replaceable and connects to the meter through a 3' cable.

  • Accuracy: ±0.2 pH | ±2% Full Scale EC/TDS
  • Range: 0.00-14.00 pH | 0.00-6.00 mS/cm | 0-4000 ppm
  • Calibration: Manual, Single Point

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Milwaukee MW802 PRO 3-in-1 pH, EC, TDS Combo Meter with ATC

This Milwaukee 3-in-1 combo meter allows you to measure pH, EC (conductivity), and TDS with a single meter and one single probe.

pH and conductivity are critical for growers. pH can affect plant nutrient and water uptake and reduce the efficiency of fertilizers, herbicides, and pesticides. Managing conductivity helps growers pinpoint fertilizer and other needs.

The Milwaukee MW802 PRO Combo Meter lets you easily and accurately test pH, conductivity, and total dissolved solids (TDS) using a single meter and integrated probe.

Simple, portable, and rugged. No more juggling multiple electrodes and wires. Automatic temperature compensation included.

The MW802 is the ultimate solution for pH and nutrient management.


The design of the MW802 is focused on simple operation and ruggedness. With a single probe, a big screen, and easy calibration, the MW802 is exceptionally simple to operate.

A tough meter build and a rugged but replaceable probe means that you can expect years of use.

The Milwaukee PRO Combo meter offers:

  • pH, conductivity / nutrient EC, TDS (ppm) with automatic temperature compensation.
  • A replaceable, integrated pH, EC, and TDS (ppm) probe with a single 3-foot cable for easy use (SE600 probe included).
  • A fiber junction on the pH sensor to reduce contamination when measuring fertilizer solutions.
  • A lightweight and portable form factor at just 5.8 ounces with a battery and just over 3 inches wide.
  • A large easy-to-read display.
  • Factory calibration with a simple, single-point manual calibration for both pH and EC.
  • A reputation for a rugged build and long life
  • Specialized design for hydroponic, aquaponic, and greenhouse growers.


The MW802 PRO Combo Meter includes both a pH and EC sensor in the SE600 integrated probe.  All pH sensors have a limited life and response time gets longer with age.  EC sensors are more robust but can still be affected by residue buildup. Both need maintenance. Properly maintaining your probe will give you fast, accurate results for longer.

Here are four tips.

  1. Always store with the cap full of buffer or storage solution MA9015, not water.
  2. Clean your probe regularly by soaking it in cleaning solution MA9016.
  3. Calibrate after cleaning and/or storage before testing to adjust for changes in the pH and EC sensor.
  4. Gently stir the probe in the sample for a faster result.


  • pH Range: 0.00 to 14.00 pH
  • EC Range: 0.00 to 6.00 mS/cm
  • TDS Range: 0 to 4000 ppm
  • pH Resolution: 0.1 pH
  • EC Resolution: 0.01 mS/cm
  • TDS Resolution: 10 ppm
  • pH Accuracy: ±0.2
  • EC/TDS Accuracy: ±2% Full Scale
  • Calibration Solutions: M10007 (pH 7.01) M10032 (1382 ppm) M10442B 1500 ppm
  • Conversion Factor: 0.68
  • Calibration: Manual at 1 point
  • Temperature Compensation: Automatic from 0 to 50°C
  • Probe: SE600 combination pH/EC/TDS probe
  • Environment: 0 to 50°C / 32 to 122°F; max RH 95%
  • Battery Type / Battery Life: 1 x 9V alkaline / 150 hours of use
  • Auto-off: After 8 minutes of non-use
  • Dimensions: 7.3 x 3.2 x 1.8 inches
  • Weight: 5.8 ounces (with battery)

View Milwaukee MW802 Combo Meter User Manual


Weight 1.65 lbs
Dimensions 4.75 × 4.75 × 10.5 in

Product Category

Controllers & Meters


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