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.
Gongma Car Tire Stone Removal Tool Set, Tire Cleaning Hook, Multi-Function Stone Picker and Extractor
$40.00
Feileniao 'Competing Beauties' Traditional Chinese Painting Gift Set - Gongbi Line Drawing DIY Kit for Beginners & New Year Gifts
$41.60
9A Natural Ice-Grade Aquamarine Loose Beads - Handmade DIY Bracelets and Necklaces for Women, Devil Blue Crystal Single Bead
$23.10
High-Precision Digital Tire Pressure Gauge with Large Display for Car Inflation
$49.50
Premium Factory Price Low-Temp 3D Printing Pen (2-Pack) - Compatible with PCL Filament
$67.91
Music Theory Book Jazz Theory Introduction Volume 1 Jazz Teaching Theoretical Knowledge Basic Textbook Tutorial HD Electronic Version
$5.00
Extra-Large Transparent Plastic Storage Box with Lid, Home Organizer for Clothes and Household Items
$4.80
Baijiali Artistic Eyebrow Hair Transplant: Bilateral Filling for Sparse Areas, Dense and Natural-Looking Results
$7,800.00
Plastic U-Shaped Trough Mold for Yam Cultivation, Directional Shallow Growth Slots (100 Pieces, Free Shipping)
$31.40
Maikeku Commercial Slow Juicer, Large Pulp-Separating Juice Extractor with High Power, Wide Mouth, Fully Automatic for Street Vending
$7,456.32
Continental CSC5 Tire 245/50R18 104V MO-V for Mercedes-Benz Viano, Vito, V260
$882.00
English Vocabulary Flashcards for Classroom Teaching - Categories Include Weather, Days, Months, Clothing, Home, Seasons, Fruits, Food, and Professions
$8.42
Cabinet Storage Box, Foldable Rattan-Style Basket for Countertop Snacks, Clothes, and Toys
$19.90
Custom PVC Sign Letters, Advertising Signs, Branding Wall Characters, Snowflake Board, Acrylic Crystal Letters for Background Walls
$5.00
Specialized Vegetable Growing Box - Foam Balcony Planter, Rectangular Plastic Pot for Home Gardening
$41.70
Fully Protected Smart Battery Tester - Performance Detector for Electric Vehicle and Car Batteries
$286.00
Large-Diameter Steel Corrugated Drainage Pipe for Bridge Culverts
$61.11
Water Curtain Paint Booth - 3-Meter Spray Station with Water Circulation for Paint Mist Purification, Eco-Friendly Dust Removal, 1-Meter Small Water Curtain Cabinet
$1,980.00
Portable Cleaning and Storage Box for Elderly Dentures, Compact Case for Full-Set False Teeth Soaking and Storage
$32.22
RC Model A07 PNP FPV Analog/Digital Racing Drone 7-Inch Aerial Photography Quadcopter Frame
$1,643.00
ACCSOON SeeMo Monitor Converter for iPhone and iPad, Real-Time Monitoring and Live Streaming
$1,059.00
Solenoid Valve Initial Inspection Test Bench / Solenoid Valve Leakage Test Bench / Solenoid Valve Airtightness Test Bench
$7,482.00
Factory Direct Hardware Screw and Parts Automatic Weighing and Packaging Machine, Vertical Weighing and Packing Equipment
$36,860.00
Commercial Heated Beverage Cabinet, Small Countertop Display Warmer with Constant Temperature for Supermarkets
$1,099.00
Manufacturer Supply Standard Dual-Color Film Copy Paper Ink Water-Based Ink Gravure Printing Machine
$17,500.00
Gray Surface Pen for Sketching and Quick Drawing - Art Highlight Sketch Paper Blending Stump and Sponge Eraser Tool Set for Still Life, Geometry, and Portraits, Designed for Art Students and Exam Candidates, Complete Beginner Kit
$6.80
Extra-Large Denture Storage Box for Seniors, Food-Grade Portable Cleaning and Soaking Container for Full Dentures
$29.90
![[Sheet Music Collection for Teachers] Continuously Updated – HD, No Watermark, Includes Tutorial Videos](https://www.gosteppe.com/cache/small/product/270366/legacy-main-31b5e0667fb30a4c5628abbc.webp)
[Sheet Music Collection for Teachers] Continuously Updated – HD, No Watermark, Includes Tutorial Videos
$49.90
Orthodontic Retainer Case for Invisible Braces, Portable Storage and Cleaning Box for Teeth Aligners and Dentures
$23.10
Portable Retainer Case for Braces, Orthodontic Clear Aligner Storage Box with Chewie and Removal Tool
$3.98
![[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)
