Optical smoke alarm uses MOC 7811 which is an optocoupler.The sensor designed for this device is based on the principle of scattering of infrared rays.The light coming from the light source passes ...

The best smoke detector will quickly alert you to a fire. Our picks, with input from fire safety experts, help keep you and your home safe.

Contribute to ahmedfaiza01/Arduino-Smoke-Level-Detector- development by creating an account on GitHub.

Among a plethora of options to choose from, here are the six best hard-wired smoke detectors from our testing. Take a peek!

A pair of hackers found that a vape detector often found in high school bathrooms contained microphones—and security weaknesses that could allow someone to turn it into a secret listening device.

A smoke alarm inside the Waldorf, Maryland, home that went up in flames Sunday morning, killing six people, had been disconnected and had no battery installed.

More carbon monoxide detectors from our tests Which? Don't Buy carbon monoxide detectors How we test carbon monoxide detectors Where to place and install a carbon monoxide detector What to do when a ...

Motel occupant fined $250 for damaging a smoke alarm at Mercure Hotel in Orange. Officers found cigarettes in the room, leading to her conviction.