{"product_id":"mq-3-gas-sensor-module-for-benzine-ch4-hexane-lpg-co-detector-module","title":"MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module","description":"\u003cmeta name=\"description\" content=\"Buy MQ3 Gas Sensor Module For Benzine CH4 Hexane LPG CO Detector online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\u003ch1\u003eMQ-3 Gas Sensor Module - Detect Benzine, CH4, Hexane, LPG \u0026amp; CO\u003c\/h1\u003e\n\u003cp\u003eReliable multi-gas detection module from The Tech Depot, Bengaluru. The MQ-3 sensor module provides accurate analog and digital output for detecting a wide range of combustible and hazardous gases - ideal for safety systems, air quality monitors, and IoT projects. Fast shipping, 7-day warranty on manufacturing defects, and expert support included.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eMQ-3 Semiconductor Gas Sensor (SnO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetectable Gases\u003c\/td\u003e\n\u003ctd\u003eBenzine, Methane (CH4), Hexane, LPG, Carbon Monoxide (CO), Alcohol Vapors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog (AO) + Digital (DO) with adjustable threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnboard Comparator\u003c\/td\u003e\n\u003ctd\u003eLM393 with potentiometer for sensitivity adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Range\u003c\/td\u003e\n\u003ctd\u003e25-500 ppm (varies by target gas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePreheat Time\u003c\/td\u003e\n\u003ctd\u003e~20 seconds for stable readings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Output Indicator\u003c\/td\u003e\n\u003ctd\u003eLED indicator for threshold trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Indicator\u003c\/td\u003e\n\u003ctd\u003eOnboard power LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e4 mounting holes for easy installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Pins\u003c\/td\u003e\n\u003ctd\u003eVCC, GND, AO (Analog Out), DO (Digital Out)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e~32 x 20 mm (compact PCB module)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, ESP8266, Raspberry Pi, STM32, and all 5V microcontrollers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7-day warranty on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003eEmail \u0026amp; WhatsApp 24\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWhy Choose the MQ-3 Gas Sensor Module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Gas Detection:\u003c\/strong\u003e Sensitive to benzine, methane, hexane, LPG, carbon monoxide, and alcohol vapors - one module covers multiple hazardous gases\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Output Modes:\u003c\/strong\u003e Analog output for precise concentration measurement and digital output for simple threshold-based alarms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer lets you fine-tune the digital trigger threshold for your specific application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Rapid detection and recovery enables real-time gas monitoring and immediate alerting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play with Arduino:\u003c\/strong\u003e Simple 4-pin connection (VCC, GND, AO, DO) - read analog values or digital HIGH\/LOW with minimal code\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Feedback:\u003c\/strong\u003e Onboard LEDs for power status and digital threshold indication make testing and debugging effortless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Tech Depot \u0026amp; Long-Lasting:\u003c\/strong\u003e SnO2 sensing element offers excellent stability and long operational life with proper use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Authentic:\u003c\/strong\u003e Sourced directly from trusted, authorized suppliers - quality guaranteed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Delivery:\u003c\/strong\u003e 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eProject Ideas\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Leak Alarm System:\u003c\/strong\u003e Build a home or kitchen safety system that triggers a buzzer and sends alerts when LPG or methane leaks are detected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreathalyzer \/ Alcohol Detector:\u003c\/strong\u003e Create a portable alcohol vapor detection device for educational demonstrations or personal safety projects\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIoT Air Quality Monitor:\u003c\/strong\u003e Pair with ESP32 or ESP8266 to build a Wi-Fi-connected gas monitoring dashboard with cloud logging and mobile notifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Safety System:\u003c\/strong\u003e Deploy in workshops, labs, or factories to continuously monitor for hazardous benzine, hexane, or CO concentrations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Ventilation Controller:\u003c\/strong\u003e Automatically activate exhaust fans or ventilation systems when gas concentration exceeds a safe threshold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Sensor Environmental Station:\u003c\/strong\u003e Combine with temperature, humidity, and particulate sensors for a comprehensive air quality monitoring station\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics \u0026amp; Autonomous Vehicles:\u003c\/strong\u003e Equip robots with gas-sensing capabilities for hazardous environment exploration and mapping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLearning \u0026amp; Education:\u003c\/strong\u003e Perfect for students learning about analog sensors, ADC conversion, threshold detection, and embedded systems programming\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eThe MQ-3 module uses a tin dioxide (SnO2) semiconductor sensing element. In clean air, SnO2 has high electrical resistance. When target gas molecules come in contact with the heated sensing surface, they reduce the resistance proportionally to the gas concentration. The onboard LM393 comparator converts this into a clean digital signal (DO pin) based on the potentiometer-set threshold, while the raw analog voltage (AO pin) provides continuous concentration data for precise measurement and data logging.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x MQ-3 Gas Sensor Module (fully assembled with header pins)\u003c\/li\u003e\n\u003cli\u003eDocumentation and technical support access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eProducts ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs technical support available?\u003c\/summary\u003e\n\u003cp\u003eYes, 24\/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eBuy MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module Online in India\u003c\/h2\u003e\n\u003cp\u003ePurchase the \u003cstrong\u003eMQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module\u003c\/strong\u003e with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.\u003c\/p\u003e\n\u003cp\u003eLooking to buy \u003cstrong\u003eMQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module\u003c\/strong\u003e at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48746536075521,"sku":"TTD-17413","price":126.14,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/97a5df5d9d5a7de1096e1d6da266dde0.jpg?v=1778107048","url":"https:\/\/techdepot.in\/products\/mq-3-gas-sensor-module-for-benzine-ch4-hexane-lpg-co-detector-module","provider":"Tech Depot India","version":"1.0","type":"link"}