pH Controller w/ solenoid and pH electrode
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With Milwaukee's Smart controllers you can monitor and control pH and/or ORP levels directly in your aquarium. All our controllers work with a 12 VDC adapter and can be hanged above your aquarium.

The meters have a user selectable set point and a visual LED alarm that is active when the reading is higher (for pH) or lower (for mV) than the set point. Also the instruments are supplied with a power plug for CO2 or ozone dosing. With each Milwaukee Smart controller your aquarium will have the individual attention that it needs.

The SMS120 smart pH monitor allows you to continuosly monitor pH values directly in your aquarium. Features include: user selectable set point, visual Led alarm when values go above the set point and manual calibration. Powered by a 12 VDC adapter all smart monitors are supplied with a clog-resistant pH electrode.

SMS122 is supplied complete with 12 VDC adapter, MA911B/2 pH electrode, 20 mL pH 7.01 sachet of calibration solution, calibration screwdriver and instructions.



0.0 to 14.0 pH


0.1 pH


±0.2 pH

pH set point

5.5 to 9.5 pH

pH Alarm

active when measurement is 
higher than set point

pH Output Power Socket

active when measurement is 
higher than set point (5A max)

pH Electrode

MA911B/2 (included)


0 to 50°C / 32 to 122°F; max RH 95%

Power Supply

12 VDC power adapter (included)

Power Drivers

230VAC, 1A


145 x 80 x 40 mm


220 g (meter only)