Mechanical sensor for home security / Mohd Afiq Mahadzer and Mohd Yusof Abdul Rahim

House is a safety place for protects us from any danger. So that, to make the house more safety, home security system was designed to detect any burglars from entering the house. Home security that installed by an alarm dealer can cost thousands of ringgit. As an alternative, a simple alarm system can be designed. In this project, a simple alarm with mechanical sensor was designed using a combination from two simple circuit, which is. gate alarm and theft prevention alarm. This combination circuits will produce a system that can detect any intruder when the sensor of the system has been broke down by emit the warning sound The proposed of the project is to provide a more reliable and more sensitive for protect it’s on from any burglars from entering the house. The sensor can be placing anywhere in house area like at all doors and windows. The system will be operate when the sensor is broke down and automatically the circuit of gate alarm will be operate and the relay is 'on' condition and it will complete the circuit of theft prevention alarm.