DIY NB-IoT Magnetic Door Contact – Instant Alarm | Smart Door Sensor | GSM Compatible

🚪 DIY NB-IoT Magnetic Door Contact Sensor – Instant Door Open Alarm | GSM Compatible | Smart Wireless Security

Enhance your home or office security with this DIY NB-IoT Magnetic Door Contact Sensor, designed to trigger an instant alarm when a door is opened. Whether you’re looking for a standalone door monitoring system or want to integrate it with a GSM alarm panel, this smart sensor delivers reliable, real-time protection for your property.

✅ Key Features at a Glance:

• 📡 NB-IoT Wireless Technology
  Reliable, long-range signal transmission using low-power Narrowband IoT connectivity—perfect for both home and commercial setups.

• 🚨 Instant Door Open Alarm
  Triggers a built-in alert immediately when a door is opened—great for intrusion detection or alerting when a door is left open too long.

• 🔗 GSM Alarm Panel Compatible
  Can be paired with a GSM-based alarm system for centralized control and real-time SMS alerts to your mobile phone.

• 🛠️ Easy DIY Installation
  No wiring required—simply attach the sensor to any door or window using adhesive backing or screws.

• 🔋 Energy-Efficient Performance
  Low power consumption extends battery life, even with frequent daily use.

📍 Perfect For:

• Home front or back doors

• Office entry points and server rooms

• Shop entrances and stockrooms

• Schools, hostels, and dormitory exits

• Elder care and child safety monitoring

💡 Why Choose This NB-IoT Door Sensor?

• Easy to install and configure

• Works independently or as part of a GSM system

• Affordable and professional-grade quality

• Ideal for anyone seeking smart, wireless door security in Nigeria