Arduino Uno Home CO Safety System Kit with SMS Alert & Exhaust Fan Control

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Transform any room into a smart safety zone by building a carbon monoxide (CO) detection unit that automatically activates an exhaust fan and sends instant SMS alerts when gas levels become dangerous. Designed for kitchens, garages, or spaces with fuel-burning appliances, this kit gives you a practical, real-world home automation project that could prevent real harm.

What You'll Build

You'll assemble a standalone CO monitoring station around the Arduino Uno R3. The MQ-7 sensor reads gas concentration in real time; when CO surpasses a threshold you set, the system triggers a loud buzzer and energises a 5V relay to turn on an exhaust fan. Simultaneously, the SIM800L GSM module sends a pre-programmed SMS to your phone, so you're alerted even when you're not in the room. The LM2596 buck converter and large capacitors ensure the GSM module gets stable power for reliable messaging.

What You'll Learn

• Calibrating and interfacing the MQ-7 electrochemical gas sensor with Arduino analog input
• Programming threshold-based logic, relay control, and alarm actuation
• Integrating the SIM800L GSM module to send SMS alerts on dangerous CO levels
• Managing power supply stability using a buck converter and filter capacitors for GSM modules

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 12 students tackling sensor-based project requirements and B.Tech ECE students prototyping home safety solutions for Smart India Hackathon will find this kit directly aligns with their curriculum. ATL tinkering labs can use it to demonstrate IoT-driven safety interventions, and it's equally suited for NIT, VIT, or BITS Pilani project submissions where real-world sensing and actuation are expected.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.