{"product_id":"tds-sensor-module-water-conductivity-meter-arduino","title":"TDS Sensor Module – Water Conductivity Meter for Arduino 3.3–5.5V","description":"\n\u003ch2\u003eTDS Sensor Module – Analog Water Conductivity \u0026amp; Quality Monitoring Meter\u003c\/h2\u003e\n\u003cp\u003eTake precise control of your water quality testing projects with this \u003cstrong\u003eTDS (Total Dissolved Solids) Sensor Module\u003c\/strong\u003e. Designed for seamless integration with Arduino and other microcontroller platforms, this analog sensor delivers reliable, real-time conductivity readings across a wide operating voltage range of \u003cstrong\u003e3.3V to 5.5V\u003c\/strong\u003e. Whether you're building a DIY water quality monitor, a hydroponics system, an aquarium controller, or an IoT smart home device, this module gives you the accuracy and flexibility you need.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates at 3.3V–5.5V, making it compatible with Arduino Uno, Mega, Nano, ESP8266, ESP32, Raspberry Pi, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e Smooth, stable analog signal output for easy integration into your microcontroller ADC pin.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater Conductivity Detection:\u003c\/strong\u003e Accurately measures the concentration of dissolved solids in liquid solutions — ideal for tap water, RO water, hydroponic nutrient solutions, and aquarium water.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact SMD Package:\u003c\/strong\u003e Space-saving surface-mount design fits neatly into any project enclosure or breadboard setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Wiring:\u003c\/strong\u003e Simple 3-pin connection (VCC, GND, Signal) for quick and hassle-free setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY \u0026amp; Maker Friendly:\u003c\/strong\u003e Perfect for hobbyists, engineers, students, and professionals building water monitoring or automation projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e TDS Sensor Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 3.3V – 5.5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Analog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e SMD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Platforms:\u003c\/strong\u003e Arduino, ESP8266, ESP32, Raspberry Pi, and most 3.3V\/5V microcontrollers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Build With It?\u003c\/h3\u003e\n\u003cp\u003eThis TDS sensor module is a versatile component for a wide variety of projects, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHome water quality monitoring systems\u003c\/li\u003e\n  \u003cli\u003eHydroponic and aquaponic nutrient solution monitors\u003c\/li\u003e\n  \u003cli\u003eAquarium and fish tank water quality controllers\u003c\/li\u003e\n  \u003cli\u003eSmart irrigation and agricultural water testing\u003c\/li\u003e\n  \u003cli\u003eIoT-connected water quality dashboards\u003c\/li\u003e\n  \u003cli\u003eEducational electronics and science projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × TDS Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a TDS Sensor Module and what does it measure?\u003c\/h4\u003e\n\u003cp\u003eA: A TDS (Total Dissolved Solids) Sensor Module measures the electrical conductivity of a liquid to estimate the concentration of dissolved substances such as minerals, salts, and other compounds in the water. It outputs an analog voltage signal that your microcontroller (like Arduino) can read and convert into a TDS value in parts per million (ppm).\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this TDS Sensor Module compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This module is fully compatible with Arduino boards (Uno, Mega, Nano, etc.) as well as other 3.3V–5.5V microcontrollers including ESP8266, ESP32, and Raspberry Pi. Simply connect VCC, GND, and the analog signal pin to your board's ADC input to get started.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What kinds of liquids can I test with this sensor module?\u003c\/h4\u003e\n\u003cp\u003eA: This TDS sensor module is suitable for testing a wide range of liquids including tap water, filtered or reverse osmosis (RO) water, hydroponic nutrient solutions, aquarium water, and other non-corrosive aqueous solutions. It is not intended for use with highly corrosive or flammable liquids.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any special libraries or code to use this with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: The module outputs a standard analog voltage, so you can read it using Arduino's \u003ccode\u003eanalogRead()\u003c\/code\u003e function. Many open-source TDS libraries and sample sketches are available in the Arduino community to help you convert the raw analog value into a meaningful TDS reading in ppm, making setup quick and straightforward.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a TDS Sensor Module and what does it measure?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A TDS (Total Dissolved Solids) Sensor Module measures the electrical conductivity of a liquid to estimate the concentration of dissolved substances such as minerals, salts, and other compounds in the water. It outputs an analog voltage signal that your microcontroller (like Arduino) can read and convert into a TDS value in parts per million (ppm).\"}}, {\"@type\": \"Question\", \"name\": \"Is this TDS Sensor Module compatible with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This module is fully compatible with Arduino boards (Uno, Mega, Nano, etc.) as well as other 3.3V–5.5V microcontrollers including ESP8266, ESP32, and Raspberry Pi. Simply connect VCC, GND, and the analog signal pin to your board's ADC input to get started.\"}}, {\"@type\": \"Question\", \"name\": \"What kinds of liquids can I test with this sensor module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This TDS sensor module is suitable for testing a wide range of liquids including tap water, filtered or reverse osmosis (RO) water, hydroponic nutrient solutions, aquarium water, and other non-corrosive aqueous solutions. It is not intended for use with highly corrosive or flammable liquids.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need any special libraries or code to use this with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module outputs a standard analog voltage, so you can read it using Arduino's analogRead() function. Many open-source TDS libraries and sample sketches are available in the Arduino community to help you convert the raw analog value into a meaningful TDS reading in ppm, making setup quick and straightforward.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"TDS Sensor Module – Water Conductivity Meter for Arduino 3.3–5.5V\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/tds-sensor-module-water-conductivity-meter-arduino\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287267053795,"sku":"\u003cnone\u003e","price":62.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S59f686a1c14b420aa376697b503bbd4dz.webp?v=1790295269","url":"https:\/\/quakegoods.com\/products\/tds-sensor-module-water-conductivity-meter-arduino","provider":"Quake","version":"1.0","type":"link"}