According to school officials, the unintentional intruder alarm caused staff and students to either shelter in place or temporarily evacuate. A spokesperson for the Rockwood School District released ...

Patrick Gallagher has a decade of experience testing products from kitchen appliances to home security essentials, focusing on what matters most. Smart home security systems combine the features of a ...

This burglar alarm is designed using 555 timer. This circuit is mainly used in homes and offices for security purpose. This circuit is designed to alert the user when an intruder enters into the home.

ST CHARLES, Mo. — A new school year is getting underway, and there is much discussion about measures to keep students and staff safe from armed intruders. Child psychologists say conversation is the ...