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MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module
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SKU: TES-EV102502
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MQ-3 Gas Sensor Module - Detect Benzine, CH4, Hexane, LPG & CO
Reliable multi-gas detection module from The Engineer Store, 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.
Specifications
| Sensor Type | MQ-3 Semiconductor Gas Sensor (SnO2) |
| Detectable Gases | Benzine, Methane (CH4), Hexane, LPG, Carbon Monoxide (CO), Alcohol Vapors |
| Operating Voltage | 5V DC |
| Output Type | Analog (AO) + Digital (DO) with adjustable threshold |
| Onboard Comparator | LM393 with potentiometer for sensitivity adjustment |
| Detection Range | 25-500 ppm (varies by target gas) |
| Preheat Time | ~20 seconds for stable readings |
| Digital Output Indicator | LED indicator for threshold trigger |
| Power Indicator | Onboard power LED |
| Mounting | 4 mounting holes for easy installation |
| Interface Pins | VCC, GND, AO (Analog Out), DO (Digital Out) |
| Dimensions | ~32 x 20 mm (compact PCB module) |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and all 5V microcontrollers |
| Origin | Original/Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the MQ-3 Gas Sensor Module?
- Multi-Gas Detection: Sensitive to benzine, methane, hexane, LPG, carbon monoxide, and alcohol vapors - one module covers multiple hazardous gases
- Dual Output Modes: Analog output for precise concentration measurement and digital output for simple threshold-based alarms
- Adjustable Sensitivity: Onboard potentiometer lets you fine-tune the digital trigger threshold for your specific application
- Fast Response Time: Rapid detection and recovery enables real-time gas monitoring and immediate alerting
- Plug-and-Play with Arduino: Simple 4-pin connection (VCC, GND, AO, DO) - read analog values or digital HIGH/LOW with minimal code
- Visual Feedback: Onboard LEDs for power status and digital threshold indication make testing and debugging effortless
- The Engineer Store & Long-Lasting: SnO2 sensing element offers excellent stability and long operational life with proper use
- 100% Authentic: Sourced directly from trusted, authorized suppliers - quality guaranteed
- Fast Delivery: 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru
Project Ideas
- Gas Leak Alarm System: Build a home or kitchen safety system that triggers a buzzer and sends alerts when LPG or methane leaks are detected
- Breathalyzer / Alcohol Detector: Create a portable alcohol vapor detection device for educational demonstrations or personal safety projects
- IoT Air Quality Monitor: Pair with ESP32 or ESP8266 to build a Wi-Fi-connected gas monitoring dashboard with cloud logging and mobile notifications
- Industrial Safety System: Deploy in workshops, labs, or factories to continuously monitor for hazardous benzine, hexane, or CO concentrations
- Smart Ventilation Controller: Automatically activate exhaust fans or ventilation systems when gas concentration exceeds a safe threshold
- Multi-Sensor Environmental Station: Combine with temperature, humidity, and particulate sensors for a comprehensive air quality monitoring station
- Robotics & Autonomous Vehicles: Equip robots with gas-sensing capabilities for hazardous environment exploration and mapping
- Learning & Education: Perfect for students learning about analog sensors, ADC conversion, threshold detection, and embedded systems programming
How It Works
The 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.
What's in the Box
- 1 x MQ-3 Gas Sensor Module (fully assembled with header pins)
- Documentation and technical support access
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module Online in India
Purchase the MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module online at The Engineer Store - 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 MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module 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.
Looking to buy MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module at the best price in India? The Engineer Store 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.
MQ-3 Gas Sensor Module - Detect Benzine, CH4, Hexane, LPG & CO
Reliable multi-gas detection module from The Engineer Store, 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.
Specifications
| Sensor Type | MQ-3 Semiconductor Gas Sensor (SnO2) |
| Detectable Gases | Benzine, Methane (CH4), Hexane, LPG, Carbon Monoxide (CO), Alcohol Vapors |
| Operating Voltage | 5V DC |
| Output Type | Analog (AO) + Digital (DO) with adjustable threshold |
| Onboard Comparator | LM393 with potentiometer for sensitivity adjustment |
| Detection Range | 25-500 ppm (varies by target gas) |
| Preheat Time | ~20 seconds for stable readings |
| Digital Output Indicator | LED indicator for threshold trigger |
| Power Indicator | Onboard power LED |
| Mounting | 4 mounting holes for easy installation |
| Interface Pins | VCC, GND, AO (Analog Out), DO (Digital Out) |
| Dimensions | ~32 x 20 mm (compact PCB module) |
| Compatibility | Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and all 5V microcontrollers |
| Origin | Original/Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the MQ-3 Gas Sensor Module?
- Multi-Gas Detection: Sensitive to benzine, methane, hexane, LPG, carbon monoxide, and alcohol vapors - one module covers multiple hazardous gases
- Dual Output Modes: Analog output for precise concentration measurement and digital output for simple threshold-based alarms
- Adjustable Sensitivity: Onboard potentiometer lets you fine-tune the digital trigger threshold for your specific application
- Fast Response Time: Rapid detection and recovery enables real-time gas monitoring and immediate alerting
- Plug-and-Play with Arduino: Simple 4-pin connection (VCC, GND, AO, DO) - read analog values or digital HIGH/LOW with minimal code
- Visual Feedback: Onboard LEDs for power status and digital threshold indication make testing and debugging effortless
- The Engineer Store & Long-Lasting: SnO2 sensing element offers excellent stability and long operational life with proper use
- 100% Authentic: Sourced directly from trusted, authorized suppliers - quality guaranteed
- Fast Delivery: 1-5 day shipping, 7-8 day delivery across India from our Bengaluru warehouse; same-day delivery available in Bengaluru
Project Ideas
- Gas Leak Alarm System: Build a home or kitchen safety system that triggers a buzzer and sends alerts when LPG or methane leaks are detected
- Breathalyzer / Alcohol Detector: Create a portable alcohol vapor detection device for educational demonstrations or personal safety projects
- IoT Air Quality Monitor: Pair with ESP32 or ESP8266 to build a Wi-Fi-connected gas monitoring dashboard with cloud logging and mobile notifications
- Industrial Safety System: Deploy in workshops, labs, or factories to continuously monitor for hazardous benzine, hexane, or CO concentrations
- Smart Ventilation Controller: Automatically activate exhaust fans or ventilation systems when gas concentration exceeds a safe threshold
- Multi-Sensor Environmental Station: Combine with temperature, humidity, and particulate sensors for a comprehensive air quality monitoring station
- Robotics & Autonomous Vehicles: Equip robots with gas-sensing capabilities for hazardous environment exploration and mapping
- Learning & Education: Perfect for students learning about analog sensors, ADC conversion, threshold detection, and embedded systems programming
How It Works
The 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.
What's in the Box
- 1 x MQ-3 Gas Sensor Module (fully assembled with header pins)
- Documentation and technical support access
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module Online in India
Purchase the MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module online at The Engineer Store - 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 MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module 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.
Looking to buy MQ-3 Gas Sensor Module For Benzine, CH4, Hexane, LPG, CO Detector Module at the best price in India? The Engineer Store 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.