[Brad] was asked by his Sister to design a motion-based alarm that would help her catch her son sneaking out of the house at night. Obviously this didn’t need to be a long-term installation so he ...

If you’re looking for something to do this weekend, consider this PIR (passive infrared) Sensor Alarm project. Not only will the motion-sensing alarm protect your gear from animals and zombies alike, ...

Car alarm systems use a host of sensors and switches to detect irregularities in case of a vehicle theft by turning on the car alarm. Modern GPS-based car alarms can locate the position of the car and ...

This motion detector alarm 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 reflected IR rays, alarm will sound ...

WTOP traffic reporter Steve Dresner, a familiar voice on WTOP’s daily broadcast, shares his experience — and lessons learned — after his car was broken into last week. Last weekend, I joined the ...