Ultrasonic Burglar Alarm: Transmitter and receiver parts of the circuit are connected each other by using a triple cable. System operates with 20V supply and 10V effective output voltage drives the ...

A new kind of burglar alarm, just patented last week, has already put a crimp in the burglar business. Developed by Samuel Bagno and manufactured by the Alertronic Corp. of Long Island City, the ...

The best alarm clocks make mornings easier, whether you want a gradual wake-up light or a powerful alarm that gets you out of ...

This article is a part of CNN Underscored’s Guide to Sleep, a weeklong focus on everything you need to sleep better. We’ll be featuring new products, tips and exclusive deals all week, so check in ...

Add Yahoo as a preferred source to see more of our stories on Google. alarm-clock-group-product-photo-1 Many people need to set an alarm to wake up on time in the morning. But using your phone for ...

Many of us use our phones as alarm clocks, waking up to the incessant ringing of a select few ringtones. For that reason, buying a standalone alarm clock may seem a bit outdated. Despite what some may ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Alarm clocks might seem ...