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TDS (Total Dissolved Solids) WATER QUALITY SENSOR

TDS (Total Dissolved Solids) WATER QUALITY SENSOR


In stock

TDS (Total Dissolved Solids) WATER QUALITY SENSOR

In stock

SKU: WPM356 Check our full Whadda product transition list Category: Skills: ,
Free shipping
Free shipping from €50
EU shipping
EU shipping in 1 to 5 days
Belgian shop
Belgian shop
Return policy
14-day unmodified return policy


Use this sensitive measurement board to determine the quality of water based on its total dissolved solids or TDS. Find out wether your tap water is clean, or keep an eye on your aquarium water, and more!

This set includes the measurement board as well as a detachable water-proof measurement probe of 60 cm. The board has a standard 3-pin header interface connector and has a simple analog voltage readout.

The TDS measurement ranges from 0 – 1000 ppm, and has an accuracy of ± 10 % full-scale at 25 °C.


  • Broad voltage compatibility: This module operates reliably within a voltage range of 3.3 to 5.5 VDC, making it suitable for various electronic applications.
  • Accurate water quality measurement: This TDS sensor provides accurate measurements of total dissolved solids (TDS) in water, with a measuring range of 0-1000 ppm. This allows you to reliably check the purity of your tap water, aquarium water, and more.
  • Versatile applications: This module is versatile and suitable for various applications, from automation, home automation and robotics to environmental and industrial monitoring.
  • STEM project: Develop and improve your STEM skills and acquire the knowledge, skills and experience needed to face the technological challenges of the future with this educational kit. This educational kit will trigger a number of processes such as problem-solving, investigative and creative thinking.
  • Made in Belgium: Whadda is a unique brand from Belgium’s Velleman Group that offers DIY projects for hobbyists or makers who want to immerse themselves in electronics, programming and mechanics.


  • Product basic info:
    • Instruction manual languages: English
    • Primary colours: White
    • Depth unit: 3.8 cm
    • Height unit: 15.5 cm
    • Width unit: 7.8 cm
    • Weight unit: 42 g
  • Technical data:
    • Specifications kits & modules: <ul> <li>detachable water-proof measurement probe included</li> <li>sensitive measurement board with simple analog voltage readout</li> </ul> <ul> <li>supply voltage: 3,3 – 5,5 V DC</li> <li>sensor output voltage: 0 – 2,3 V DC</li> <li>working current: 3 – 6 mA</li> <li>TDS measurement range: 0 – 1000 ppm</li> <li>TDS measurement accuracy: ± 10 % full-scale (at 25 C)</li> <li>module interface connector: standard 3-pin header</li> <li>electrode interface connector: JST XH2,54-2P</li> <li>cable length: 60 cm</li> </ul>
  • Operational properties:
    • Coding skill level: 3
    • Electronics skill level: 1
    • Mechanics skill level: none
    • Soldering skill level: none

Additional information

Weight42 g
Dimensions3,80 × 7,80 × 15,50 cm



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Manual EN

Online Manual


Example code EN

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