{"product_id":"gas-leak-detector-project-combo-arduino-nano-mq-2-sensor-buzzer-relay","title":"Gas Leak Detector Project Combo | Arduino Nano + MQ-2 Sensor + Buzzer + Relay","description":"\u003ch2\u003eGas Leak Detector Project Combo — Arduino Nano + MQ-2 + Buzzer + Relay + LEDs\u003c\/h2\u003e\n\u003cp\u003eBuild your own \u003cstrong\u003eGas Leak Detector \u0026amp; Safety Alarm\u003c\/strong\u003e with this complete project combo from \u003cstrong\u003eXsortex HUB\u003c\/strong\u003e. This kit combines the \u003cstrong\u003eArduino Nano\u003c\/strong\u003e with the \u003cstrong\u003eMQ-2 Gas \u0026amp; Smoke Sensor\u003c\/strong\u003e, \u003cstrong\u003eActive Buzzer\u003c\/strong\u003e, \u003cstrong\u003eRelay Module\u003c\/strong\u003e, and dual indicator LEDs — giving you a fully functional gas detection system that alerts you to dangerous LPG, methane, smoke, or hydrogen levels and can automatically cut power to an appliance via the relay.\u003c\/p\u003e\n\u003cp\u003eIdeal for students building a home safety project, makers prototyping a smart kitchen alarm, or engineers demonstrating gas sensing and automated relay control with Arduino.\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included in This Combo?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× Arduino Nano\u003c\/strong\u003e — ATmega328P, 5V, 14 digital I\/O, 8 analog inputs, Mini-USB \/ Type-C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× MQ-2 Gas \u0026amp; Smoke Sensor Module\u003c\/strong\u003e — Detects LPG, methane, smoke, hydrogen \u0026amp; propane; analog + digital output; 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 3V Active Buzzer\u003c\/strong\u003e — Loud audible alarm on gas detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 5mm Red LED\u003c\/strong\u003e — Danger indicator — lights up when gas is detected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 5mm Green LED\u003c\/strong\u003e — Safe indicator — lights up when air is clean\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5× 220Ω Resistors\u003c\/strong\u003e — Current-limiting resistors for Red and Green LEDs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1× 1-Channel Relay Module\u003c\/strong\u003e — 5V coil, 10A\/250VAC — auto-cut power to gas appliance on detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJumper Wires\u003c\/strong\u003e —  male-to-female for breadboard connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreadboard\u003c\/strong\u003e — 400-point solderless breadboard for prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eMQ-2 sensor\u003c\/strong\u003e continuously monitors the surrounding air for combustible gases and smoke. Its analog output is read by the Arduino Nano’s ADC. When gas concentration exceeds a safe threshold:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🔴 \u003cstrong\u003eRed LED\u003c\/strong\u003e turns ON (danger alert)\u003c\/li\u003e\n\u003cli\u003e🟢 \u003cstrong\u003eGreen LED\u003c\/strong\u003e turns OFF\u003c\/li\u003e\n\u003cli\u003e🔔 \u003cstrong\u003eBuzzer\u003c\/strong\u003e sounds a continuous alarm\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eRelay\u003c\/strong\u003e trips to cut power to a connected gas appliance or exhaust fan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen air returns to safe levels, the system resets automatically — green LED on, buzzer off, relay restored.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller:\u003c\/strong\u003e Arduino Nano (ATmega328P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Sensor:\u003c\/strong\u003e MQ-2 — LPG, methane, smoke, hydrogen, propane; analog + digital output; 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicators:\u003c\/strong\u003e 5mm Red LED (danger) + 5mm Green LED (safe), both with 220Ω resistors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlert:\u003c\/strong\u003e 3V Active Buzzer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay:\u003c\/strong\u003e 1-Channel, 5V coil, 10A\/250VAC — controls external appliance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 5V via USB from Arduino Nano\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProgramming:\u003c\/strong\u003e Arduino IDE — no extra libraries required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHome kitchen LPG gas leak alarm\u003c\/li\u003e\n\u003cli\u003eSmoke and fire early warning system\u003c\/li\u003e\n\u003cli\u003eAutomatic exhaust fan activation on gas detection\u003c\/li\u003e\n\u003cli\u003eIndustrial gas monitoring prototype\u003c\/li\u003e\n\u003cli\u003eEngineering college safety \u0026amp; IoT project\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder now from Xsortex HUB\u003c\/strong\u003e and get fast delivery across India. All components are tested for compatibility and ready to wire up on the included breadboard.\u003c\/p\u003e","brand":"Xsortex HUB","offers":[{"title":"Default Title","offer_id":52625330536580,"sku":"KIT-NANO-GAS-001","price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/6472\/4100\/files\/Gasleak.png?v=1786178425","url":"https:\/\/www.xsortexhub.com\/mr\/products\/gas-leak-detector-project-combo-arduino-nano-mq-2-sensor-buzzer-relay","provider":"Xsortex HUB","version":"1.0","type":"link"}