Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Input Voltage	3.3V - 5.5V DC
Output Signal	Analog Voltage (0-2.3V)
TDS Measurement Range	0 - 1000 ppm
Accuracy	±10% F.S.
Operating Temperature	0°C to 50°C
Probe Cable Length	1.5 meters
Interface Type	Gravity Interface / PH2.0-3Pin
Probe Material	Food Grade Titanium Alloy
Module Dimensions	42mm x 32mm x 15mm
MCU Compatibility	Arduino, Raspberry Pi, ESP32

5 reviews

Anonymous

Mar 15, 2026

Rating: 3/5

Documentation could be better

The sensor works but the wiki link was broken. Had to search forums for the library. Once set up, it is okay.

Anonymous

Feb 25, 2026

Rating: 5/5

Great value for money

Cheaper than buying a full meter and gives me raw data for my IoT project. Shipping was fast.

Anonymous

Feb 10, 2026

Rating: 5/5

Perfect for my hydroponics setup

Works flawlessly with my ESP32. Calibration was straightforward using the provided code examples. Readings are consistent.

Anonymous

Feb 02, 2026

Rating: 5/5

Reliable readings

Compared this against a professional meter and the results were very close after calibration. Highly recommend for embedded apps.

Anonymous

Feb 02, 2026

Rating: 4/5

Good sensor, needs calibration

The hardware is solid. Just remember you need standard solution for accurate calibration. Out of the box it gives relative values.

5 FAQ

Q: Can this run on 3.3V logic?

A: Yes, the module supports 3.3V to 5.5V input.

Q: Do you provide a calibration solution?

A: No, the module ships without calibration powder. You need to purchase TDS standard solution separately.

Q: Is there an Arduino library available?

A: Yes, you can find the DFRobot TDS library on GitHub or the Arduino Library Manager.

Q: What is the maximum water temperature?

A: The probe can handle up to 50°C. Higher temperatures may damage the sensor.

Q: Is the probe waterproof?

A: The probe is IP68 rated for submersion, but the module board itself is not waterproof.

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