The start of the new year is the perfect time to double check your home's smoke alarms to be sure they're properly installed ...

Some smoke alarms have tiny lights inside and if the smoke particles get in the way of the lights, the alarm is activated. A different type of alarm uses chemicals which give out an electrical charge.

The best smart smoke detectors add a layer of connectivity to this essential device in your home. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

So how does it work? If the detector goes off while [Vivek ... make sure you’ve got a “dumb” smoke alarm as a backup.