Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Measurement Range	0-1000 ppm TDS
Operating Temperature	0°C to 50°C
Accuracy	±2% Full Scale
Power Supply	3.3V - 5.5V DC
Output Signal	Analog Voltage / UART
Probe Material	Stainless Steel 316L
Cable Length	1.5 Meters
Waterproof Rating	IP68 (Probe Only)
Response Time	< 3 Seconds
Compatibility	Arduino, Raspberry Pi, ESP32

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Reliable for continuous monitoring

I am using this in a commercial lettuce grow setup. It has been running 24/7 for a month now. The online temperature compensation keeps the data consistent regardless of ambient changes. Very satisfied.

Anonymous

Mar 28, 2026

Rating: 4/5

Solid component for the price

For the cost, you really can't beat this module. It's not laboratory grade, but for hobbyist aquarium or pool monitoring, it provides more than enough precision. Just ensure you keep the probe clean.

Anonymous

Mar 25, 2026

Rating: 3/5

Works well but cable is stiff

The sensor itself performs as advertised regarding TDS detection. However, the cable is quite rigid, which made routing it through my tight filtration cabinet a bit challenging. Otherwise, no complaints about performance.

Anonymous

Mar 23, 2026

Rating: 4/5

Good value, needs calibration

The build quality is solid and the stainless steel probe feels durable. Out of the box, it was slightly off, but after calibrating with a standard solution, the readings are very accurate. Great for hydroponics.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for my reef tank monitoring system

This sensor module integrated seamlessly with my ESP32 setup. The temperature compensation feature works great, providing stable readings even when the heater cycles on and off. Highly recommended for DIY aquarium projects.

Anonymous

Mar 05, 2026

Rating: 5/5

Easy to interface with Arduino

Documentation was clear enough to get this running in under an hour. The analog output is smooth, and I haven't seen any noise issues. It's been running in my sump for three weeks without any drift.

5 FAQ

Q: How often does the probe need cleaning?

A: For optimal performance, we suggest inspecting and gently cleaning the probe every 2-4 weeks depending on the water quality. Biofilm or mineral buildup can affect reading accuracy over time.

Q: Is this sensor suitable for saltwater aquariums?

A: Yes, the probe is made of 316L stainless steel which is resistant to corrosion in saltwater environments. However, please note the measurement range is optimized for typical TDS levels found in reef tanks.

Q: Can I bury the entire unit underwater?

A: Only the probe tip and the cable are rated IP68 for submersion. The main circuit board module must be kept dry and housed in a waterproof enclosure if placed near water sources.

Q: Does this module come with a calibration solution?

A: No, the module does not include a calibration solution. We recommend purchasing a standard TDS calibration solution separately to ensure the highest accuracy for your specific application.

Q: What is the voltage requirement for the logic level?

A: The sensor operates on a wide voltage range of 3.3V to 5.5V DC, making it directly compatible with both 3.3V and 5V microcontrollers like the ESP32 and Arduino Uno without needing a level shifter.

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