SeeedStudio Grove TDS Sensor/Meter For Water Quality


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SKU: 765936
  1. Input Voltage: 3.3/5V
  2. Output Voltage: 0 ~ 2.3V
  3. Working Current: 3 ~ 6mA
  4. TDS Measurement Range: 0 ~ 1000ppm
  5. Power indication LED
  6. Analog Signal, easy to implement
  7. Waterproof TDS Probe


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Category: Water TDS, pH, Flow, Level and Pressure Sensor
Tags: TDS

This is a SeeedStudio Grove TDS Sensor/Meter For Water Quality.

The Grove – TDS Sensor detects the Total Dissolved Solids (TDS) levels in the water which can be used to indicate the water quality. The Grove – TDS Sensor can be applied in water quality applications such as TDS meter, well water, aquarium, hydroponics, etc.

It supports 3.3/5V input voltage and 0 ~ 2.3V Output Voltage making it easy to be compatible with all Arduino Boards. The sensor also provides a waterproof probe, making the testing process much easier to handle.

What is TDS and why should you care: 

TDS = Total Dissolved Solids, is a measure of the dissolved combined content of all inorganic and organic substances present in water. Typically, the higher the TDS value, the more substances dissolved in water. Hence, higher levels of Total Dissolved Solids (TDS) can indicate that water has more contaminants that can pose health risks.

Seeed Studio Main

Pin diagram 

Seeed Studio Mh

  1. The Waterproof TDS probe cannot be used in water above 70°C.
  2. The sensor cannot be used to measure flowing water.
  3. The sensor cannot be used to measure water with high pollution concentration.
  4. The Grove sensor itself is not waterproof.


  1. Analog Signal, easy to implement
  2. Power indication LED
  3. Support 3.3/5V Input Voltage
  4. Good Arduino Compatibility
  5. 0 ~ 2.3V Output Voltage can be easily implemented in 3.3/5V control system
  6. Waterproof TDS Probe

Useful Link:

Package Includes:

1 x Grove – TDS Sensor

1 x 20cm Grove Cable

1 x Waterproof TDS Probe

Output Voltage

0 ~ 2.3V

Working Current

3 ~ 6mA

TDS Measurement Range

~ 1000ppm

Waterproof Probe Cable Length


Connection Interface

XHB 2.54mm 2P


20 x 40 cm



Shipping Weight 0.05 kg
Shipping Dimensions 7 × 4 × 2 cm
6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Grove - TDS Sensor

LMV324 Datasheet

CD4060BM Datasheet

Questions and answers of the customers

    HI, Please let us know if this sensor will work w... Read more
  1. 0 votes
    Q HI, Please let us know if this sensor will work with a remotely operated underwater vehicle up t...... Read more answer now
    Asked by sibanandamailbox on July 9, 2021 10:41 am
    A No, it is not able to work under this condition 
  2. Can we connect another EC/TDS probe to this circui... Read more
  3. 0 votes
    Q Can we connect another EC/TDS probe to this circuit ? answer now
    Asked by RAHUL TALELE on December 3, 2020 7:12 am
    A No, you cannot connect another TDS probe to this c... Read more
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Country Of Origin: China