This home smoke detector circuit warns the user against fire accidents. It relies on the smoke that is produced in the event of a fire and passes between a bulb and an LDR, the amount of light falling ...

This photoelectric smoke detector circuit uses one LED and 2 LDRs to detect the smoke and sound an alarm. The LM1801 IC is the best choice for this circuit because we need a few external components ...

Roost’s smart smoke alarm connects to Wi-Fi, comes with a companion app, and lets you know when it’s low on battery. The alarm also alerts you and your loved ones when it detects smoke, just to make ...

SimpliSafe completists will want to add this interconnected smart smoke/CO detector to their systems, but we don’t Consider it an essential component. SimpliSafe has replaced the smoke and carbon ...

Kidde announced three new home safety devices that it says respond to dangerous conditions 25 percent faster than the competition: a battery-powered smoke detector, a battery-powered smoke and carbon ...

Gadget lust is a likely common affliction for GeekWire readers. You may be fantasizing about Google Glass or a new iPad Air, but I bet that you haven’t thought about that annoying smoke detector in ...