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Home / Computer Hardware, Monitors & Peripherals / TDS Sensor Module for Dissolved Solids Water Quality Testing, Compatible with 51/STM32

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Measurement Range 0-1000 ppm
Input Voltage 3.3V - 5.5V DC
Output Signal Analog Voltage (0-2.3V)
Operating Temperature 0°C to 50°C
Interface Type PH2.0-3Pin
Probe Length 58mm
Accuracy ±10% F.S.
Probe Material Titanium Alloy
MCU Compatibility 51, STM32, Arduino, ESP32
PCB Dimensions 42mm x 32mm

5 reviews

A

Anonymous

Apr 05, 2026

Rating: 5/5

Great for Hydroponics

Works perfectly with my ESP32 setup. Readings are consistent and stable over time.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Accurate readings

Compared with lab results and it was surprisingly close for a consumer module.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Easy to integrate

Library examples helped me get started within minutes. Highly recommended.

A

Anonymous

Mar 05, 2026

Rating: 4/5

Good value

Calibration needed but works well for the price point. Good for hobby projects.

A

Anonymous

Feb 02, 2026

Rating: 3/5

Probe cable short

Functionality is fine but wish the cable was longer for my specific tank setup.

5 FAQ

Q: How do I calibrate it?

A: Use a standard TDS solution and adjust the potentiometer or code offset.

Q: What is the power consumption?

A: Typically less than 5mA during operation.

Q: Does it work with Arduino Uno?

A: Yes, it is compatible with 5V logic boards like the Uno.

Q: Can it measure saltwater?

A: It is designed for fresh water monitoring. High salinity may damage it.

Q: Is this waterproof?

A: The probe is waterproof, the module board is not. Keep the board dry.

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