A loud whistle can draw attention to your ... you can see the remarkable transformation in safety devices. Today’s personal alarms are designed to be compact and user-friendly, ensuring you ...

The alarm clock is a simple device that plays a critical role in ... was a common wake-up signal for entire villages. Factory ...

HANDA, Aichi Prefecture—A company here that specializes in anti-auto theft devices has developed an alarm system to prevent children from being left behind on buses. Kato-Denki Inc., which ...