A clock is by its very nature a device for measuring time, and thus it moves forward at a constant rate. But how about in a ...

Window alarm sensors are an essential part of home security systems, alerting you to unauthorized entries by monitoring window openings, glass breaks and motion. Each window alarm sensor type serves a ...

Beefing up your locks and latches, maintaining good habits and putting together a DIY system could save you thousands.

Abstract: This brief presents a new real-time photoplethysmogram (PPG) signal quality assessment system for significantly reducing an overall energy consumption and reducing frequent false alarms. The ...

In this video, I experiment with creating a window and door alarm using the following materials: a small piece of wood, a ...