Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | E-201 |
| Measurement Range | 0.00 to 14.00 pH |
| Temperature Compensation | Automatic (0°C to 60°C) |
| Output Signal | Analog Voltage (0-5V) |
| Operating Voltage | 5V DC |
| Response Time | < 30 seconds |
| Probe Type | Glass Electrode with BNC Connector |
| Accuracy | ±0.1 pH (after calibration) |
| Interface Compatibility | Arduino, Raspberry Pi, ESP32 |
| Included Software | Filtering Algorithm Examples (C++/Python) |
Anonymous
Mar 28, 2026
Rating: 5/5
Stable readings after warm-up
I use this for monitoring aquarium water. After letting it warm up for about 15 minutes, the readings are very consistent. The BNC connector makes it easy to swap probes if needed in the future.
Anonymous
Mar 24, 2026
Rating: 4/5
Works as advertised
The module detects changes in pH quickly. The only reason for 4 stars instead of 5 is that the probe requires storage in a specific solution when not in use, which wasn't clearly highlighted in the quick start guide.
Anonymous
Mar 22, 2026
Rating: 5/5
Great for university projects
Used this for my final year project on soil acidity. The analog output is easy to read with an ADC, and the temperature sensor integration saved me from building a separate circuit. Highly recommended for students.
Anonymous
Mar 22, 2026
Rating: 4/5
Good value, needs careful calibration
The hardware quality is solid for the price. Temperature compensation works well. Just remember that you must calibrate it frequently for accurate results. The documentation could be slightly more detailed on the algorithm logic.
Anonymous
Mar 03, 2026
Rating: 5/5
Excellent for DIY Hydroponics
This module works perfectly with my Arduino setup. The included filtering code really helps stabilize the readings, which were previously jumping around. Calibration was straightforward using standard buffer solutions.
Anonymous
Mar 01, 2026
Rating: 5/5
Filtering algorithm is a game changer
I've used other cheap pH sensors before, and the noise was unbearable. The provided examples with the moving average filter make the data usable immediately. Very happy with this purchase.
Q: Is the temperature sensor built into the probe or the module board?
A: The temperature sensor is integrated into the probe tip alongside the pH electrode to ensure accurate real-time temperature compensation at the measurement point.
Q: Does this module come with calibration powder or buffer solutions?
A: No, the module includes the sensor board and probe only. You will need to purchase pH 4.01, 7.00, and 10.01 buffer solutions separately for calibration.
Q: What microcontrollers are supported by the example code?
A: The current library supports Arduino Uno, Mega, Nano, and ESP32. We also provide a Python script example for Raspberry Pi users in the GitHub repository linked in the manual.
Q: Can I use this sensor directly in saltwater environments?
A: Yes, the probe is suitable for saltwater applications like aquariums or marine tanks. However, please rinse the probe with distilled water after each use to prevent salt crystallization on the glass bulb.
Q: How often does the probe need to be replaced?
A: Under normal usage and proper storage conditions, the probe typically lasts 1 to 2 years. If you notice slow response times or an inability to calibrate, it may be time for a replacement.
Natural Amethyst, Rose Quartz, Clear Quartz, and Lemon Quartz Double-Pointed Tumbled Beads for DIY Bracelets, Necklaces, and Earrings
$1.70
Accordion-Style Watercolor Sketchbook, 32k Foldable Blank Paper, 300g Cotton Pulp Fine Texture for Painting, A4 Stamp Collection Travel Journal, DIY Sticker Art Notebook
$9.70
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$52.55
VFD 2.2kW 9.8A Single Phase 220V
$1,919.00
Printmaking Press Machine - Large Format Etching and Woodblock Printer for School Art Classes and Clubs
$583.11
Bread Rattle Superman Maraca Baby 0-1 Year Soothing Tool Newborn Safe to Chew Grip Training Hand Rattle
$8.80
Direct Supply 0.75kw Laboratory Frame Mixer - Suitable for Mixing Fluid Materials, Adhesives, and Lithium Battery Applications
$2,395.00
Yonghe Hair Transplant Follicle Detection and Scalp Health Assessment - Consultation and Photodynamic Therapy Experience
$0.10
Continental CSC5 Tires – Sizes 215/225/235/245/255 x 40/45/50/55 R17/18/19/20/21
$725.00
Commercial High-Speed Fruit and Vegetable Crusher and Puree Maker, Continuous Processing Equipment for Galangal, Fresh Ginger, Bell Peppers, and Tomatoes
$17,980.00
DIY Scented Candle Molds - 24 Popular Korean Acrylic PC Styles: Cylinder, Pointed Top, Flat Top, Square, Shell
$10.80
Custom Solid Wood Plaque and Couplet Carving - Wooden Shop Signage, Arched Door Headers, and Grand Opening Engravings
$174.00
New Direct-Sale 326 Instant Glue - High-Strength Structural Adhesive for Metal, Heat Resistant, Anti-Aging, Ideal for Car Rearview Mirrors
$26.54
Zhong Shaojing Lingfei Jing Small Regular Script Water Writing Cloth for Calligraphy Practice - Reusable Quick-Dry Mat
$22.53
New 968 Fast-Drying Super Glue - Strong Bond for Metal, Magnets, Rubber, and Aluminum Alloy
$18.20
German Imported Stone Removal Hook Car Tire Stone Cleaning Tool Vehicle Foldable Multi-Function Stone Remover
$11.34
![[10% Off for 2 Items] Double-Sided Wool Felt Mat for Calligraphy and Painting, Student Practice Sheet, Brush Writing Desk Pad, Four Treasures of the Study Set](https://www.gosteppe.com/cache/small/product/270298/legacy-main-71bd30ba8d3367be61265f91.webp)
[10% Off for 2 Items] Double-Sided Wool Felt Mat for Calligraphy and Painting, Student Practice Sheet, Brush Writing Desk Pad, Four Treasures of the Study Set
$6.63
In Stock Special Offer: QS18VP6LLPQ8 Sensor - Price Negotiable
$600.00
Broccoli Vegetable Washing Machine for Pre-made Dishes, Water Bath Cleaning Equipment with Bubble System for Herbs and Export-Grade Produce
$615.00
Hongkedou Oxford Fabric Bag-in-Bag Divider Insert, Stiff Makeup Organizer with Zipper, Waterproof Small Women's Pouch
$22.00
Pad Printing Machine Accessories: Positioning Clamps, T-Shaped Holders, and Locking Irons
$0.60
Japanese High-Concentration Oxalic Acid Toilet Cleaner, Powerful Urine Scale Remover and Stain Eliminator
$23.82
Biliansheng No-Shave Hair Transplant - Hairline and Crown Thinning Treatment, Hair Loss Detection Service
$86.00
Laorentou Paper Blending Stump for Sketching - Professional Art Supply for Highlighting and Pastel Work
$6.80
Fast-Drying Glue for ABS Plastic - Transparent, High-Strength, Odorless, Non-Whitening Instant Adhesive for ABS and PC Plastics
$58.96
Manufacturer Supply Oxygen Absorber Oxygen Generator Stable Performance Hydrogen-Rich Machine Hydrogen Generator
$5,058.00
POPMART CRYBABY Vacation Mode On - Vinyl Plush Keychain Blind Box
$106.99
Portable Travel Potty for Kids, Outdoor Toilet, Foldable Car Seat Potty for Babies, Travel Urinal for Outdoors
$29.90
Wen Zhengming Red Cliff & Tengwang Pavilion Copybook - 2-Volume Running Script Long Scroll for Calligraphy Practice
$22.00
Commercial Food Warmer Cabinet, Double-Layer Display Unit for Western Restaurants and Burger Shops, Wholesale Two-Tier Heating Showcase
$2,527.00
![[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)
