--- product_id: 247081258 title: "Gravity: Analog TDS Meter Sensor Kit for Arduino - 83cm Waterproof Probe with Anti-Polarization Design, 0-1000ppm ±10%, Water Quality Testing for Hydroponics/Aquarium/Home" brand: "dfrobot" price: "SAR 116" currency: SAR in_stock: false reviews_count: 4 category: "Df Robot" url: https://www.desertcart.com.sa/products/247081258-gravity-analog-tds-meter-sensor-kit-for-arduino-83cm-waterproof store_origin: SA region: Saudi Arabia --- # 0-1000ppm TDS range 3.3~5.5V wide voltage input 83cm waterproof probe Gravity: Analog TDS Meter Sensor Kit for Arduino - 83cm Waterproof Probe with Anti-Polarization Design, 0-1000ppm ±10%, Water Quality Testing for Hydroponics/Aquarium/Home **Brand:** dfrobot **Price:** SAR 116 **Availability:** ❌ Out of Stock ## Summary > 💧 Dive into data-driven water wellness—because your ecosystem deserves precision. ## Quick Answers - **What is this?** Gravity: Analog TDS Meter Sensor Kit for Arduino - 83cm Waterproof Probe with Anti-Polarization Design, 0-1000ppm ±10%, Water Quality Testing for Hydroponics/Aquarium/Home by dfrobot - **How much does it cost?** SAR 116 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/247081258-gravity-analog-tds-meter-sensor-kit-for-arduino-83cm-waterproof) ## Best For - dfrobot enthusiasts ## Why This Product - Trusted dfrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Simplicity:** Gravity 3-pin interface enables effortless Arduino integration—no soldering required. - • **Universal Compatibility:** Supports 3.3V to 5.5V systems, perfect for diverse DIY and professional projects. - • **Anti-Polarization Design:** Ensures stable, reliable readings by preventing probe signal distortion over time. - • **Durable Waterproof Probe:** 83cm submersible sensor designed to withstand wet environments while protecting your data. - • **Precision Water Quality Insight:** Monitor dissolved solids with ±10% accuracy for healthier aquariums and hydroponics. ## Overview The Gravity Analog TDS Meter Sensor Kit by DFRobot offers an accurate, ±10% reliable measurement of total dissolved solids in water, ranging from 0 to 1000ppm. Featuring an 83cm waterproof probe with anti-polarization technology, it seamlessly integrates with Arduino systems via a simple 3-pin plug-and-play interface. Ideal for hydroponics, aquariums, and drinking water monitoring, this sensor supports a wide voltage input (3.3~5.5V) and outputs analog signals compatible with most control boards, empowering professionals and enthusiasts to maintain optimal water quality with ease. ## Description INTRODUCTION TDS (Total Dissolved Solids) indicates that how many milligrams of soluble solids dissolved in one liter of water. In general, the higher the TDS value, the more soluble solids dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one of the references for reflecting the cleanliness of water. TDS pen is a widely used equipment to measure TDS value. The price is affordable, and it is easy to use, but it is not able to transmit data to the control system for online monitoring to do some water quality analysis. The professional instrument has high accuracy and can send data to the control system, but the price is expensive for the ordinary people. To this end, we have launched an analog TDS sensor kit which is compatible with Arduino, plug and play, easy to use. Matching with Arduino controller, you can build a TDS detector easily to measure the TDS value of liquid. Attention: 1.The probe can not be used in water above 55 degrees centigrade. 2.The probe can not be left too close to the edge of the container, otherwise it will affect the reading. 3.The head and the cable of the probe are waterproof, but the connector and the signal transmitter board are not waterproof. Please be careful. FEATURES Wide Voltage Input: 3.3~5.5V Good Compatibility Output: 0~2.3V analog signal output, compatible with 5V or 3.3V controller AC Excitation Source: effectively prevent probe from polarization Waterproof Probe SPECIFICATION Signal Transmitter Board Input Voltage: 3.3 ~ 5.5V Output Voltage: 0 ~ 2.3V Working Current: 3 ~ 6mA TDS Measurement Range: 0 ~ 1000ppm TDS Measurement Accuracy: ± 10% F.S. (25 ℃) Module Interface: PH2.0-3P Electrode Interface: XH2.54-2P TDS probe Number of Needle: 2 Total Length: 83cm Connection Interface: XH2.54-2P Other: Waterproof Probe Review: Thanks - Great for measuring. Easy set up. Review: Know the mysteries of thine water! - I wonder things, such as ash or bad rain, wouldst alter the water herein, that lieth await of measure. The "sensors", purchased from those of yonder great rainforest, have arrived. Doeth having so much waiste change our waters in ways we cannot imagine, yet may still divine? Valuing my fish and their health perhaps more than I do you and yours, reader, I shall not at mine own hand test these hypotheses. I shall defer to expert authority. Yet I would still measure, and have a little bird tell me in mine ear when such measures ring warning. ## Features - Accurate Water Purity Measurement: Measures TDS levels (0-1000ppm ±10% accuracy) to monitor dissolved solids in drinking water, hydroponics, and aquariums, solving the data-logging limitations of basic TDS pens - Easy to Use: simple connection via Gravity 3-pin interface, plug and play without solderin with sample code - Good compatibility: This TDS sensor supports 3.3~5.5V wide voltage input, and 0 ~ 2.3V analog voltage output, which makes it compatible with a 5V or 3.3V control system or board - NOTE: While the TDS probe tip and cable are waterproof and submersible, the connection interface and signal converter board are NOT waterproof. Avoid exposing these components to water during use ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B086GX2539 | | Best Sellers Rank | 50,024 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 62 in Lab pH Meters | | Brand | DFRobot | | Country Of Origin | China | | Current Rating | 3 Milliamps | | Current rating | 3 Milliamps | | Customer Reviews | 4.2 out of 5 stars 28 Reviews | | Manufacturer | DFROBOT | | Manufacturer Part Number | SEN0244 | | Maximum Supply Voltage | 5.5 Volts | | Maximum supply voltage | 5.5 Volts | | Measurement Accuracy | ±10% | | Measurement accuracy | ±10% | | Model Number | SEN0244 | | Output Type | analog | | Output type | analog | | Specific Uses For Product | drinking water, hydroponics, aquariums | | Specific uses for product | drinking water, hydroponics, aquariums | | Upper Temperature Rating | 55 Degrees Celsius | ## Product Details - **Brand:** DFROBOT - **Maximum Supply Voltage:** 5.5 volts_of_direct_current - **Measurement Accuracy:** ±10% - **Output Type:** Analog - **Style:** Modern ## Images ![Gravity: Analog TDS Meter Sensor Kit for Arduino - 83cm Waterproof Probe with Anti-Polarization Design, 0-1000ppm ±10%, Water Quality Testing for Hydroponics/Aquarium/Home - Image 1](https://m.media-amazon.com/images/I/6192ip0BC4L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Thanks *by Z***T on 29 July 2026* Great for measuring. Easy set up. ### ⭐⭐⭐⭐⭐ Know the mysteries of thine water! *by A***G on 6 February 2021* I wonder things, such as ash or bad rain, wouldst alter the water herein, that lieth await of measure. The "sensors", purchased from those of yonder great rainforest, have arrived. Doeth having so much waiste change our waters in ways we cannot imagine, yet may still divine? Valuing my fish and their health perhaps more than I do you and yours, reader, I shall not at mine own hand test these hypotheses. I shall defer to expert authority. Yet I would still measure, and have a little bird tell me in mine ear when such measures ring warning. ### ⭐⭐⭐⭐ Great budget sensor *by P***A on 9 March 2021* This is a pretty good budget EC sensor for small experiments. EC/TDS are highly dependent on water temperature so it would have been nice to have a DS18B20 included in the kit. There is a bit of extra calibration required so be prepared to do a little math when you hook this thing up. Luckily, the code samples were very useful and provided accurate readings when calibrated to the correct K value. This is perfect for my project right now, but I’m probably going to upgrade very, very soon... I’ll need a higher range beyond 1000ppm in the late summer. ## Frequently Bought Together - Gravity: Analog TDS Sensor for Arduino | Total Dissolved Solids Meter | Water Quality Sensor Compatible with Arduino - Gravity: Dual-Mode Turbidity Sensor for Arduino / ESP32 / STM32 / Raspberry Pi (ADC Required) | Water Quality Monitor | <500ms Response Time & 0-4000NTU Range - 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 --- ## 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.com.sa/products/247081258-gravity-analog-tds-meter-sensor-kit-for-arduino-83cm-waterproof](https://www.desertcart.com.sa/products/247081258-gravity-analog-tds-meter-sensor-kit-for-arduino-83cm-waterproof) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-10-19*