Digital pH Controller

PH-301 controller.jpg
PH-301 controller.jpg

Digital pH Controller

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This pH Controller is an industrial, heavy duty 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.


  • 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 the Protection Dead Band feature, a feature in which the controller automatically turns off or shuts down to protect your unit from erroneous readings
  • 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,  UK,  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)