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This pH Controller is an upgraded version of our PH-201 Controller. It is the industrial & heavy duty version with a new re-engineered body structure. Reliable and accurate testing instrument with accuracy of ±0.1%+2 digits. Equipped with RELAY CONTACT with 0~14pH measuring range, and with highly accurate results. This very reliable and precise measuring instrument is equipped with a replaceable BNC terminal plugs for PH electrodes for easy attachment and removal from the device. It allows you to monitor pH as well as controlling pH levels using just one unit. The large and informative display is capable of displaying the status of the current conditions in the aquarium and setting values. The controller provides a suitable way for you to keep an eye on water parameters in your tank. Simply attach solenoid valves or dosing pumps to the plug sockets supplied to dose CO2 as required.

A CO2 system are control devices that regulate the amount and helps your fish to RELIEVE STRESS stress and your plants to grow, flourish, and have vibrant colors. Adding CO2 means tracking its concentration €” too low an addition rate or excessive water movement can result in insufficient CO2 levels, whereas too much CO2 can stress or even kill fish. A pH measurement and control system is the best way to know and control CO2 and pH levels. This controller can be used in aquaculture, beverage, fish hatcheries, water ponds, whirlpool, spa, food processing, photography, laboratory, paper industry, swimming pool, plating industry, quality control, water conditioning, schools and many other applications.


  • Best for heavy duty or Industrial use
  • Bigger and re-engineered body structure
  • Fast response and easy to calibrate
  • REPLACEABLE pH Electrode just so you won't have to buy the whole unit when one of the electrode is not working
  • Comes with pH4.003 + pH6.864 calibration (buffer) solutions for free
  • Durable and built to last long
  • With big digital display and accurately measures & is easy to use
  • Heavy-duty, Compact & Lightweight for mobility and extremely easy-to-use
  • Accurate testing results guaranteed
  • APPROVED BY STRICT QUALITY AND SAFETY STANDARDS which ensures a reliability, durability, long and trouble-free life
  • Uses Protection Dead Band feature
  • Gives you an option to mount it on the wall or hung on the solution's container while using or installing the unit
  • Provides Power Cord for US or UK or Australia or Europe
  • Available in 110V & 220V


  • Measuring Range: 0.00~14.00pH
  • Resolution: 0.01PH
  • Accuracy: ±0.1%+2 digits
  • Input Resistance: 1012Ω
  • Set Range: 3.50~10.50pH
  • Voltage: available in 110V & 220V
  • Calibration: Double Points
  • Display 4 LED display reading
  • Power Supply: in Label
  • Environment: 
    • Operation Temp. : 0 to 50 °C (32 to 122 °F)
    • Ambient Humidity : 90 or less than 90 % R. H.
  • Power Requirement : AC110V ±10% 60Hz / AC220V ±10% 50Hz
  • Power Consumption: 2 watts
  • Relay Contact : 5A for AC 110V and 220V
  • Output Voltage : the same as power supply voltage
  • Dimensions: 160mm x 102mm x 40mm
  • Weight: 772g


Set Includes

  • 1 x Digital pH Controller
  • FREE pH4.003 + pH6.864 calibration (buffer) solutions
  • 1 x Detachable pH electrode
  • 1 x Operation Manual
  • 1 x Mini-screw driver
  • 1 x Controller Holder for hanging the device
  • 1 x Power Cord (choose one from the available: Australia, UK, US or Europe)  

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