Arduino Industrial CO Detector with SMS Alert & Exhaust Fan Relay Kit

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

Monitor carbon monoxide levels in industrial or home environments and automatically activate an exhaust fan while sending SMS alerts on your phone when CO reaches dangerous levels. This kit combines an Arduino Uno with an MQ-7 CO sensor, a GSM module for real-time notifications, and a relay to control heavy loads — all built on a breadboard for rapid prototyping. Whether you're safeguarding a basement workshop or submitting a Smart India Hackathon prototype, this project puts you in control with professional-grade industrial logic.

What You'll Build

You will assemble a fully functional CO monitoring system that continuously senses gas concentration, triggers a loud buzzer and a 5V relay (to switch an exhaust fan or alarm) when levels cross a threshold, and sends an SMS with the CO reading via the SIM800L module. The system includes a buck converter for stable power supply, making it suitable for 12V battery or adapter operation. You can set the alert threshold in code and adapt it for real-world use — from a home kitchen to a small factory zone.

What You'll Learn

• Interfacing an MQ-7 carbon monoxide sensor with Arduino and interpreting analog gas concentration values
• Controlling a 5V relay module to switch AC/DC loads like exhaust fans or sirens
• Sending SMS alerts via SIM800L GSM module, including AT commands and network registration
• Building a stable 5V/2A power supply using an LM2596 buck converter and decoupling capacitors for GSM spikes

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for intermediate-level builders — senior secondary students (CBSE Class 11–12) working on science exhibitions or ATL Tinkering Lab projects, first-year B.Tech ECE/EEE students prototyping for Smart India Hackathon, and hobbyists at IIT/NIT/VIT and engineering colleges exploring industrial IoT. If you understand basic Arduino coding and want to add GSM communication and relay control, you're in the right place.

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.