Here is five burglar alarm circuits for you can look as idea To protect their property from thieves. simple switching, vibration systems, touch-sensitive.
The Door Guard Knob Alarm circuit with touch system. When thief caught on door handle, makes alarm once. Use the the detector capacitance within the body.
The CCD camera sensor is device that have very useful. This project has small size. But quality is a lot good. We can install with Television easily
This is PIR motion sensor circuit. The movement lasted only one. the detection accuracy of Pyroelectric. As product of a Passive infrared detector PIR. [...]