Motion sensor alarms are readily available in the market, but these are expensive. Here is a simple and inexpensive Arduino based motion sensor alarm with voice alert. It can be used for security ...

Overview Today’s Home Security Gadgets are smarter, sleeker, and more user-friendly than ever before.Top picks include smart ...

Alarm system to turn on audio signal (loud siren or unheard from outside warning) Perimeter control system for notification of crossing the control line. Can be used for a sound signal and for ...