Description
Reviews
| 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 |
| Probe Material | Titanium Alloy |
| Interface Type | PH2.0 3-Pin Connector |
| Working Temperature | 0°C to 50°C |
| PCB Dimensions | 45mm x 20mm |
| Waterproof Rating | IP67 (Probe Only) |
| Application | Hydroponics, Aquariums, Water Purification |
Anonymous
Mar 30, 2026
Rating: 5/5
Accurate and robust
Compared the readings with a handheld commercial meter, and the results were within an acceptable margin of error. The waterproofing on the probe is excellent. Very happy with this purchase.
Anonymous
Mar 30, 2026
Rating: 3/5
Works well after tweaking
The sensor itself is good, but I had to adjust the gain potentiometer on the board to get the full range of voltage output. Once tuned, it performs as described. Just be careful not to overtighten the screw.
Anonymous
Mar 27, 2026
Rating: 4/5
Good value, needs calibration
Solid build quality for the price. It connects easily to my STM32 board. Note that you must calibrate it with a standard solution before getting accurate ppm readings, but that is expected for this type of sensor.
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for my hydroponic setup
This TDS sensor module works flawlessly with my Arduino Uno. The analog output is stable, and the titanium probe seems very durable in water. Calibration was straightforward using the provided library examples.
Anonymous
Mar 11, 2026
Rating: 4/5
Great for learning IoT
Used this for a university project on smart water systems. The documentation could be slightly more detailed, but there are plenty of online tutorials. The signal is clean and easy to read via ADC.
Anonymous
Mar 03, 2026
Rating: 5/5
Reliable water quality monitoring
I've been using this to monitor my aquarium's water quality for two months. The readings are consistent, and the module hasn't shown any signs of corrosion. Highly recommended for DIY projects.
Q: Can this measure saltwater salinity?
A: This sensor measures Total Dissolved Solids (TDS) primarily intended for freshwater applications like drinking water or hydroponics. While it may give a reading in saltwater, it is not calibrated for high-salinity environments and may provide inaccurate results.
Q: Does the package include a calibration solution?
A: No, the package includes only the TDS sensor module and the probe. You will need to purchase a standard TDS calibration solution separately to ensure accurate ppm readings.
Q: Is this sensor compatible with 3.3V logic boards like the ESP32?
A: Yes, the module operates on a voltage range of 3.3V to 5.5V, making it fully compatible with 3.3V logic boards such as the ESP32 and STM32 without needing a level shifter.
Q: What library should I use for Arduino?
A: You can use generic analog reading code, but many users find the 'GravityTDS' library available in the Arduino Library Manager to be very effective for filtering noise and converting voltage to ppm values.
Q: How long can the probe stay submerged in water?
A: The probe is designed for continuous submersion in water. However, we recommend cleaning the probe gently with distilled water every few weeks to prevent buildup that might affect accuracy.
Iers Electric Airbrush/Marker Pen Wireless Handheld Portable for Gundam Model Painting
$322.00
Commercial Glass Food Warmer Display Case for Egg Tarts, Hamburgers, Fried Chicken, and Youtiao - Countertop Heating Cabinet for Catering
$1,795.00
Premium Used Tires Removed from Vehicles Sizes 155 165 175 185 195 205 215 225
$54.00
Storage Bag Compatible with Dyson/Laifen Hair Dryer Curling Iron Straightener Double-Layer Portable Travel Hand-Carry Case
$48.40
Chushinmi - Silicone Collapsible Dish Drying Rack, Kitchen Organizer, Sink Utensil Holder for Bowls and Chopsticks
$61.90
Wenxin Tang Ultra-Clear Zhi Yong Thousand Character Classic Regular Script Calligraphy Cards - Boxed Practice Sheets for Medium-Sized Brush Writing
$40.80
Cute Pig Pot Lid Holder and Drainage Mat, Multi-Function Heat Insulator and Cutting Board Rest
$2.01
![[Damai Micro-Needle Hair Transplant Patent] Top Scalp Thinning Treatment | High-Density 200 Grafts Micro-Needle Transplant](https://www.gosteppe.com/cache/small/product/269847/legacy-main-921c5365abd34b2597668ec5.webp)
[Damai Micro-Needle Hair Transplant Patent] Top Scalp Thinning Treatment | High-Density 200 Grafts Micro-Needle Transplant
$199.00
Song Dynasty Guo Xi's 'Traveling in Snowy Mountains' Hanging Scroll - Study Copy Template, Art Core, Landscape Painting, Zen Decorative Art, HD Collectible
$12.80
Drain Basket for Wet/Dry Separation with Hanging Vegetable Strainer Rack
$111,978.00
Custom Mesh Lid Organizer Bag for Pelican 1535 Case - Laptop Compartment
$118.70
Home LED High-Power Rechargeable Flashlight, Multi-Purpose Long-Range Portable Ultra-Bright Mini Torch
$20.60
Accsoon CineEye M7 Pro 4K Wireless Video Transmitter and Monitor with 7-inch HDMI/SDI Dual-Transmission Screen
$99.00
Stainless Steel Sink Rack Kitchen Organizer Over-Sink Dish Drying Rack with Utensil Holder
$48.00
Specialized Vegetable Growing Box - Foam Balcony Planter, Rectangular Plastic Pot for Home Gardening
$41.70
Thickened Resin Vegetable Planter Box - Rectangular Plastic Balcony Pot for Growing Vegetables and Flowers
$101.00
SEATOSUMMIT Outdoor Travel Portable Waterproof First Aid Kit Wilderness Survival Personal Medical Folding Storage Bag
$79.00
Commercial Gas Storage Water Heater, Condensing Low-NOx Boiler, Fully Automatic Natural Gas Hot Water Furnace for Hotels
$13,175.00
SH1.0/1.25/ZH1.5/PH2.0XH2.54 Electronic Wire Connector Terminal Cable 2P-12P
$0.04
VFD Capacitor ALS30A1363KJ/ALS30C1024NP/ALS30C1023NP
$500.00
200X18DNNmm L Shape Stainless Stel Corern Brace Repeair Ang
$88.28
Quilling Paper Set Gradient Color Tool Kit Handmade Quilling Strips Basic Packaging for Fine Line Coloring
$38.00
Standard Ou Kai Calligraphy Beginner's Sun Tzu's Art of War & Thirty-Six Stratagems Small Regular Script Brush Copybook Xuan Paper Long Scroll for Tracing
$18.00
Mold Release Oil for Incense Beads and Tags - Colorless, Odorless, Food-Grade Auxiliary Release Agent
$8.00
Tafara Aromatherapy Matches - Premium Extended-Length Safety Matches for Incense Burners (20 Count)
$23.80
Magnetic Sponge Holder and Steel Wool Rack for Sink, Stainless Steel No-Drill Kitchen Organizer
$9.94
Touchmark Square Sketchbook for Acrylic Markers - Thick Paper Art Journal for Quick-Dry, Smudge-Free Drawing
$10.80
Mo Hao Detail Brush Set, Goat Hair Liner, Wolf Hair Round/Flat Brushes for Oil Painting, Art & Gouache
$78.00
Authentic Military-style Socks for Men - Summer and Winter Anti-odor Sweat-absorbing Mid-calf Black and Navy Blue Training and Sports Socks
$23.80
Alliance Authorized Plaque - Yoga Alliance RYT, Pilates Alliance, International Yoga Alliance, China Yoga Alliance
$380.00
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
