Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Output Signal	Analog Voltage (0-2.3V)
Operating Voltage	3.3V - 5.5V DC
Measurement Range	0 - 1000 ppm
Compatibility	Arduino, STM32, ESP8266, ESP32
Interface Type	PH2.0 3-Pin Connector
Probe Material	Food Grade Titanium Alloy
Working Temperature	0°C to 50°C
PCB Dimensions	42mm x 32mm x 14mm
Application	Hydroponics, Aquariums, Water Purifiers
Calibration	Software Adjustable via Code

6 reviews

Anonymous

Mar 21, 2026

Rating: 4/5

Good hardware, needs calibration

The build quality is solid and the titanium probe feels durable. Just remember that you must calibrate it using standard solutions before getting accurate ppm readings. Instructions could be clearer.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect for my hydroponic setup

This TDS sensor module works flawlessly with my Arduino Mega. The analog output is stable, and the readings match my handheld tester within a reasonable margin. Great value for DIY projects.

Anonymous

Mar 06, 2026

Rating: 5/5

Great for university projects

Used this for my final year project on water quality monitoring. It interfaced easily with the STM32 board. The documentation online helped me get the code running quickly.

Anonymous

Mar 05, 2026

Rating: 5/5

Excellent sensitivity

Very responsive to changes in water composition. I tested it with tap water, distilled water, and saline solution, and the analog values shifted immediately. A must-have for IoT water sensors.

Anonymous

Mar 05, 2026

Rating: 4/5

Solid performance

Works as advertised. The voltage output correlates well with TDS levels. I deducted one star because the connector wires were a bit short for my specific enclosure design.

Anonymous

Mar 02, 2026

Rating: 5/5

Reliable for aquarium monitoring

I've been running this in my saltwater tank for two weeks now. It handles the environment well and the signal noise is minimal when properly grounded. Highly recommended for hobbyists.

5 FAQ

Q: Can I use this directly with a 5V Raspberry Pi GPIO?

A: While the module operates at 5V, the Raspberry Pi GPIO pins are 3.3V logic. You should use a voltage divider or an ADC hat to safely read the analog signal without damaging the Pi.

Q: Is there a library available for ESP32?

A: Yes, several open-source libraries are available on GitHub that support this generic analog TDS sensor. You can adapt most standard TDS Arduino libraries for the ESP32 platform.

Q: Does this module come with the calibration powder?

A: No, the module includes the sensor probe and circuit board only. Calibration solutions or powders must be purchased separately to ensure accurate ppm readings.

Q: How often does the sensor need recalibration?

A: For best accuracy, we recommend recalibrating every 2-4 weeks depending on usage frequency and water conditions. If the sensor is used in harsh environments, more frequent calibration may be necessary.

Q: What is the maximum depth the probe can be submerged?

A: The titanium probe itself is waterproof and can be fully submerged. However, please ensure the PCB board and the connector junction remain dry and above the water line.

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