The circuit operates using a pair of ultrasonic transmitter and receiver modules which are used to detect the person. When the person is detected (the person is in the front door), the doorbell is ...

The project described in this article is a ready-made item from a $2.00 shop! And it is made in China! It is a wireless doorbell with a cost of about $10.00. It is so cheap, you could not build it ...

HUNTSVILLE, Alabama -- Madison County Circuit Judge Billy Bell is retiring today after 12 years on the bench and 30 years practicing law before that. Bell was a very successful divorce attorney and ...

A wired doorbell system has three components: a low-voltage (15- to 20-volt) transformer, a chime and a doorbell button. They are connected by 18- or 20-gauge low-voltage wires. Although it’s at low ...

Consumer Reports has no financial relationship with advertisers on this site. It’s easy to understand the appeal of video doorbells: You can see when a package is delivered and be alerted when someone ...

HUNTSVILLE, AL -- Madison County Circuit Judge Billy Bell has been a reluctant part of thousands of divorces over his 30-year career as an attorney and seven years on the bench. And he's ready for a ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. ST. LOUIS– St. Louis County Prosecuting ...

WASHINGTON D.C. In a unanimous panel ruling, the Federal Circuit invalidated a patent owned by Salem, Massachusetts inventor A. G. Bell. On February 14, 1876, Mr. Bell was granted Letters Patent No.

Here’s a new killer-looks limited edition Bell helmet proudly bearing the signature of Airtrix founder Chris Wood: the 2014 Circuit of the Americas Star Carbon lid, available for purchase until April ...

AUSTIN, Texas — Christopher Bell is making the most of his late-race chances to seize victories. Bell passed Kyle Busch with five laps to go, then held off Daytona 500 winner William Byron to win ...