Description
Reviews
| 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 |
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.
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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