Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Interface Type | Analog (AO) |
| Operating Voltage | 3.3V - 5V DC |
| Compatibility | Arduino UNO, Mega, Nano, Raspberry Pi |
| Detection Range | 0 - 1000 ppm TDS |
| Probe Length | 60 mm |
| Cable Length | 1.5 meters |
| Output Signal | 0 - 2.3V Analog |
| Application | Hydroponics, Aquariums, Water Purification |
| Material | Corrosion-resistant Titanium Alloy Probe |
| Dimensions | 45mm x 25mm x 12mm (Module only) |
Anonymous
Mar 26, 2026
Rating: 5/5
Easy to integrate
I used this for a science project monitoring rainwater collection. The analog output is smooth and easy to read with the ADC on the microcontroller. Highly recommended for students.
Anonymous
Mar 26, 2026
Rating: 5/5
Reliable water quality monitoring
Been running this in my nutrient reservoir for three weeks now. It handles the mild acids and nutrients without corroding. The data logging has been very stable.
Anonymous
Mar 23, 2026
Rating: 4/5
Good value, needs calibration
Great module for the price. Just remember that you must calibrate it with a known solution before getting accurate absolute values. For relative changes in water quality, it is excellent out of the box.
Anonymous
Mar 22, 2026
Rating: 5/5
Perfect for my hydroponic setup
This sensor works flawlessly with my Arduino Uno. The readings are consistent and match my handheld TDS meter very closely. Setup was easy using standard analog libraries.
Anonymous
Mar 21, 2026
Rating: 3/5
Works but probe is short
The electronics work fine, but I wish the probe leads were a bit longer for deep tank applications. I had to extend the wires myself. Otherwise, functionality is as described.
Anonymous
Mar 13, 2026
Rating: 4/5
Solid build quality
The PCB looks well-made with clear labeling for VCC, GND, and SIG. The titanium probe feels durable. Took off one star because the example code provided online was slightly outdated, but easy to fix.
Q: What is the maximum temperature of water this can handle?
A: The sensor is rated for water temperatures between 0°C and 50°C (32°F - 122°F). Using it in hotter liquids may damage the probe or affect reading accuracy.
Q: Is the output digital or analog?
A: This module provides an analog output (AO) which corresponds to the TDS level. You will need to use an Analog-to-Digital Converter (ADC) pin on your microcontroller to read the value.
Q: How often does the probe need to be cleaned?
A: For best accuracy, we recommend rinsing the probe with distilled water after every use and performing a deeper clean with a soft cloth every two weeks if used continuously in nutrient-rich water.
Q: Can I use this directly with a 3.3V logic board like ESP32?
A: Yes, the sensor operates on a voltage range of 3.3V to 5V, making it fully compatible with 3.3V logic boards such as the ESP32 or ESP8266 without needing a level shifter.
Q: Does this sensor measure pH levels as well?
A: No, this module is designed specifically for measuring Total Dissolved Solids (TDS) and electrical conductivity. You would need a separate pH sensor module for acidity/alkalinity measurements.
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