This burglar alarm system circuit is using a infrared proximity detector that triggers an alarm when the rays falling on its sensor are interrupted. It is different from others burglar alarm systems ...

GE Personal Security Window and Door Alarm, 5 Pack, DIY Protection, Burglar Alert, Wireless Chime/Alarm, Easy Installation, Home Security, Ideal for Home, Garage, Apartment and More,White, 45987 ...

The Z20 Disturbance Sensor provides discrete detection which heightens perimeter security through the intelligent detection of vibration or movement of the fence or other structures. Alarms are ...

Motion detector alarm This motion detector alarm circuit can detect a moving person from a distance of 1 meter. It uses a Dual IR Transmitter-Receiver module HOA1405.When the sensor detects the ...

[Jeff Sandberg] demonstrates that ably with his project to use ancient 1990s burglar alarm sensors in his modern smarthome setup. The sensors in question are from an old GM Interlogix security system.

Intrusion detection devices must maintain a delicate balance. Highly sensitive devices can cause too many false alarms, while devices with insufficient sensitivity are easily defeated by sophisticated ...