A lithium-ion battery in a remote-controlled car is being blamed for sparking a three-alarm house fire in Milton on Sunday. Strafford County dispatchers received a call from the area of 36 Charles St.

A very interesting remote controlled alarm circuit using TSOP1736. Routing of an electric cable to attach a calling bell switch near the bed of an old age/patient is not a good idea. Here is an ultra ...

A startup has come up with a simple way to make smoke and carbon-monoxide detectors more useful: a nine-volt battery with built-in Wi-Fi. The battery can alert you on your smartphone if the alarm goes ...