Project Idea
Design a smart gas leakage detection system that senses harmful gas presence in the environment and immediately triggers alerts through buzzer and SMS notifications. Using a gas sensor and GSM module, the system ensures early detection of gas leaks, preventing potential hazards. Ideal for kitchens, factories, and storage facilities, this project is perfect for learning about safety automation and sensor-based systems.
Project Description
This project is a gas leakage detection and alert system built using Arduino Uno and the MQ-2 gas sensor. When the sensor detects gas beyond a certain threshold, it activates a buzzer for immediate alert and sends an SMS using the SIM800L GSM module to a predefined mobile number. The system is powered by 18650 Li-Ion batteries and can be installed in kitchens, industries, or storage areas. It uses jumper wires and a breadboard for modularity and easy assembly. features like LEDs, LCD display, or relay control for automatic shutdown is also added.
Components List
Arduino Uno
MQ-2 Gas Sensor
SIM800L GSM Module
18650 Li-Ion Batteries
Battery Holder
Buzzer
Jumper Wires
Breadboard
USB Cable
LED Indicators
Relay Module
Features
Real-Time Gas Leak Detection
SMS Alert to Predefined Mobile Number
Immediate Buzzer Alarm for Local Warning
GSM-Based Communication – No Internet Required
Portable Battery Operation
Easy to Program and Expand
Works with LPG, Methane, and Smoke Detection
LED Indicators for Visual Alerts
Relay Support for Safety Cutoff
Ideal for Home, Industrial, and Commercial Use
Project Applications
Home KitchensDetect LPG leaks and alert occupants in- stantly to prevent accidents.
Restaurants and Hotels- Secure large cooking areas with automatic gas leakage monitoring.
Gas Storage Facilities- Monitor storage tanks and cylinders for early leak detection.
Chemical Labs- Ensure safety where flammable gases are used regularly.
Industries and Factories- Prevent fire hazards in gas-powered industrial environments.
School and College Safety Projects- Demonstrate practical use of sensors in hazard prevention.
IoT Safety Systems- Integrate with cloud platforms for advanced monitoring and logging.
Smart Homes Integration- Connect to smart home ecosystems for automated shutdown.
Apartment Gas Safety- Deploy in multi-storey buildings to detect and alert gas leaks.
Emergency Response Planning- A vital component in fire or disaster detection systems.
Shipping Dimensions
- Length: 15 cm
- Width: 10 cm
- Height: 10 cm
Weight: 600 grams
Esimate project weight: 1kg
📦 Project Includes:
Fully assembled and tested circuit
Circuit diagram
Source code
(For DIY KITs - only the components will be provided)
Project Types:
- DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
- DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
- Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
- Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
Notes -
All the products are made by LearnElectronics India and not for re-sale.
These project is a prototype project to show/present/explain and work like to real life product. It is not a product, if you need a ready-made product then reach out to us here.

