--- product_id: 246746858 title: "CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi" brand: "cqrobot" price: "85.84 DT" currency: TND in_stock: true category: "Cq Robot" url: https://www.desertcart.tn/products/246746858-cqrobot-tds-water-quality-monitoring-sensor-for-arduino-and-raspberry store_origin: TN region: Tunisia --- # 3.3V-5.5V wide voltage input Waterproof probe for liquid immersion 0-2.3V analog output, high compatibility CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi **Brand:** cqrobot **Price:** 85.84 DT **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead in water quality—monitor like a pro, effortlessly! ## Quick Answers - **What is this?** CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi by cqrobot - **How much does it cost?** 85.84 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/246746858-cqrobot-tds-water-quality-monitoring-sensor-for-arduino-and-raspberry) ## Best For - cqrobot enthusiasts ## Why This Product - Trusted cqrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Waterproof Durability:** Robust probe design ensures longevity and consistent performance in wet environments. - • **Plug & Play Simplicity:** Effortless Arduino & Raspberry Pi integration—no soldering needed. - • **Universal Voltage Range:** Operates seamlessly between 3.3V and 5.5V, perfect for diverse microcontrollers. - • **Precision TDS Monitoring:** Accurate dissolved solids detection with ±10% F.S. at 25°C for reliable water quality insights. - • **Enhanced Accuracy with ADS1115:** Pair with ADS1115 16-bit ADC for ultra-stable readings down to 1 PPM—ideal for pro-grade projects. ## Overview The CQRobot TDS Water Quality Monitoring Sensor offers a versatile, waterproof probe with wide voltage compatibility (3.3V-5.5V) and analog output (0-2.3V) designed for Arduino and Raspberry Pi platforms. It delivers reliable dissolved solids measurements with ±10% accuracy at 25°C and achieves enhanced precision when paired with the ADS1115 16-bit ADC module, making it perfect for hydroponics, aquariums, and household water testing. ## Description CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi | TDS (Total Dissolved Solids) Detector, Ideal for Aquarium, Hydroponics, Household & Daily Drinking Water Testing: desertcart.com: Industrial & Scientific ## Features - Wide Voltage Input: 3.3V to 5.5V. Good Compatibility Output: 0 to 2.3V analog signal output, compatible with 5V or 3.3V controller. - AC Excitation Source: effectively prevent probe from polarization, Waterproof Probe. - Easy to Use: Arduino compatible, simple connection, plug and play without soldering. - Used with ADS1115 16-Bit ADC Module (ASIN: B08KFZ3PVT, Model: CQRADS1115), Compatible with Raspberry Pi Motherboard. - Note: When using the TDS instrument sensor, the sensor probe is immersed in liquid, and the purchaser needs to Separate the sensor Probe Protective Cover to avoid incorrect data reading and malfunction. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08KXRHK7H | | Best Sellers Rank | #308,138 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #66 in Conductivity Meters & Accessories | | Brand Name | CQRobot | | Current Rating | 4 milliamps | | Customer Reviews | 4.2 4.2 out of 5 stars (236) | | Item Weight | 0.05 kg | | Manufacturer | CQRobot | | Material Type | PLA_(Polylactic Acid), PE_(Polyethylene) | | Maximum Supply Voltage | 5.5 volts | | Measurement Accuracy | +/- 10% F.S. (25 Degree Celsius) | | Model | CQRSENTDS01 | | Output Type | Analog Voltage | | Part Number | CQRSENTDS01 | | Specific Uses For Product | laboratory, scientific research, teaching, liquid quality analysis, online analysis | | Style Name | Modern | ## Product Details - **Brand:** CQRobot - **Current Rating:** 4 milliamps - **Item Weight:** 0.05 kg - **Material:** PLA_(Polylactic Acid), PE_(Polyethylene) - **Style:** Modern ## Images ![CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi - Image 1](https://m.media-amazon.com/images/I/41OIOjsfkbL.jpg) ![CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi - Image 2](https://m.media-amazon.com/images/I/51weaTN0dZL.jpg) ![CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi - Image 3](https://m.media-amazon.com/images/I/51zmhbEURfL.jpg) ![CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi - Image 4](https://m.media-amazon.com/images/I/51wb2UFwiNL.jpg) ![CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi - Image 5](https://m.media-amazon.com/images/I/417-65GPkHL.jpg) ## Questions & Answers **Q: Can this sensor work with an ESP32 and esphome?** A: Hello! It can be used with ESP32 and esphome, it's just that we don't have example test code at the moment. Buyers need to have a certain ESP32 application coding foundation, test and write code by themselves. **Q: Can the probe be fully submersed? And if so, for how long? Indefinitely?** A: Hi! The TDS probe and lead are made of waterproof material and can be immersed in water, but the cable interface and signal transfer board are not waterproof, please use it with caution. Please refer to the "Connections and Examples" section in the Wiki of this product below: http://www.cqrobot.wiki/index.php/TDS_(Total_Dissolved_Solids)_Meter_Sensor_SKU:_CQRSENTDS01 **Q: Is the sensor able to be plumbed into water line? a number of tds sensors will directly fit in a 1/4" push connect fitting.** A: Hi! The probe and lead of the TDS sensor are made of waterproof material, which can be inserted into the water pipe and installed in the 1/4" push connection fitting, but make sure that the water temperature in the water pipe does not exceed 55 degrees Celsius, because the probe cannot be used in water above 55 degrees Celsius. Please. Refer to the "Connections and Examples" section in the following Wiki of this product: http://www.cqrobot.wiki/index.php/TDS_(Total_Dissolved_Solids)_Meter_Sensor_SKU:_CQRSENTDS01 ## Frequently Bought Together - CQRobot TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - PH Sensor for Arduino, PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC, PH Sensor UNO, PH Sensor Arduino Kit, PH Sensor Raspberry Pi Kit, by HQ&LP - KEYESTUDIO Turbidity Sensor Module V1 for Arduino,Water Quality Monitor Particles Water/Liquid Turbidity Level Tester --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/246746858-cqrobot-tds-water-quality-monitoring-sensor-for-arduino-and-raspberry](https://www.desertcart.tn/products/246746858-cqrobot-tds-water-quality-monitoring-sensor-for-arduino-and-raspberry) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-11*