In this security system is based on the embedded system along with GSM and sensor networks. The human movement is detected using the PIR sensors.

Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

Real Time Home Security System using GSM Technology-An Anti-theft System! This project deals with the design & development of a theft control system for home, which is being used to prevent/control ...

Want to set up a home security system, but don’t want to pay a monthly fee to a security company? Techradar has a detailed do-it-yourself project for a connected alert system using Raspberry Pi.

You can easily add new sensors to an existing SimpliSafe system. In fact, the process can be done using a phone or the SimpliSafe Keypad. Here's how it works.

Arduino Based Wireless Intrusion Detection Using IR Sensor and GSM Intrusion Detection Systems (IDS) strive to catch computer system intrusion & utilize by any garnering and analyzing data.

With everything, each sensor node should cost about $15; very cheap for something that if built by a proper security system company would cost much, much more.