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 ...

When the power fails on a subzero night, your alarms are only as trustworthy as the batteries hiding behind their plastic ...

Don't wake up one day wondering where your car went. Protect your investment with a good car alarm system. ith the advent of built-in vehicle immobilizers and keyless entry remotes, the aftermarket ...