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The ROBODIUM Smart Door GSM Alert Kit is a powerful DIY home-security project designed to send instant SMS alerts whenever a door is opened or unauthorized entry is detected.
Using the SIM800L GSM Module, MC-38 magnetic door sensor, and PIR motion detector, this kit provides real-time intrusion notifications directly to your mobile number.
Perfect for students, hobbyists, security developers, and home automation enthusiasts, this kit allows you to create your own GSM-based door security system with reliable components and simple Arduino programming.
A great addition for school projects, IoT demonstrations, and personal safety setups.
Sends SMS alert when door is opened or tampered.
Detects motion using PIR sensor.
LED indication for status, alert, and power.
Works with any GSM SIM card (Airtel, VI, BSNL, Jio if 2G supported).
Highly reliable MC-38 magnetic sensor for door/entry detection.
Easy to assemble with breadboard or zero PCB.
Operating Voltage: 3.7V–4.2V (requires regulated supply)
Quad-Band GSM: 850/900/1800/1900 MHz
Supports SMS, GPRS, and Calling
Onboard Antenna for stable network signal
TTL serial communication
Normally Closed (NC) type
ABS plastic enclosure
Strong magnetic sensitivity
Ideal for door/windows monitoring
Operating Voltage: 5V
Detection Range: 5–7 meters
Output: Digital HIGH/LOW
Adjustable sensitivity and delay
Arduino Nano/UNO
ATmega328P microcontroller
5V logic
Supports USB programming
9V battery / 5V regulated power
Zero PCB or breadboard compatible
Screw terminals for secure wiring
LED indicators for status monitoring
GSM SIM800L Module with Antenna × 1
MC-38 Magnetic Door Sensor × 1
PIR Motion Sensor × 1
Arduino Nano × 1
LED Indicators (Red/Green/Blue) × 3
Buzzer (Alarm Beeper) × 1
5V Power Supply / Battery × 1
Zero PCB × 1
Breadboard × 1
Resistors (10kΩ ) × 1
Jumper Wires / Connecting Wires × 1
At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.
Most items sold on ROBODIUM™ can be returned within the return window, including:
To be eligible for a return, items must be:
Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.
We arrange the return pickup for you — hassle-free returns similar to major e-commerce platforms.
All products include a minimum 15-day warranty against manufacturing defects, unless otherwise specified on the product page.
Warranty does not cover misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.
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Take 20% off your first order
Enter the code below at checkout to get 20% off your first order