Silent Alarm SMS Panic Button Kit – A Covert Alert System with Arduino Uno

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

When every second counts, a silent alert can be the difference between safety and vulnerability. This kit lets you build a hidden button that, when pressed, sends an SMS with a pre-set message and device identifier over the GSM network—without any audible feedback that might alert a nearby threat. Perfect for personal safety, elderly care, or student security projects, this intermediate-level build combines real-world utility with practical electronics learning.

What You'll Build

A fully functional, battery-powered panic button that fits in a pocket or under a desk. Pressing the concealed tactile switch triggers the SIM800L module to send an SMS containing a customizable message and a unique device name, allowing the recipient to immediately know who needs help and where. The entire circuit remains dark and silent—no LEDs, no buzzers—making it invisible during an emergency.

What You'll Learn

• Interfacing Arduino with GSM modules (SIM800L) and managing AT commands for SMS transmission.
• Implementing edge-triggered interrupt handling for a concealed button without false alarms or debounce issues.
• Power regulation using buck converters to supply stable 4V to the SIM800L from a USB or battery input.
• Designing a low-power, covert alert system that operates reliably without any visible or audible indicators.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for CBSE Class 11–12 students building safety-focused science fair projects, B.Tech ECE/EEE students tackling embedded systems assignments, and participants in the Smart India Hackathon prototyping personal security solutions. ATL Tinkering Lab mentors can use it to teach real-world GSM communication, while college clubs at IITs, NITs, VIT, and BITS Pilani will find it perfect for campus safety hackathons.

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.