The light scattering principle is the basis for how an optical smoke detector or photo-electric alert functions. The sensor chamber uses a pulsed infrared LED beam to check for smoke particles every 10 seconds. A fire in a no-smoking area is indicated by these smoke detectors. As a safety precaution, many commercial and industrial buildings utilize them. While residential fire alarms emit an audible or visual alert from the detector, commercial smoke detectors send a signal to the fire control panel. Smoke detectors are installed in plastic casings in the form of discs. Either the photoelectric method or ionization is used in the smoke detecting technique. Both of the sensing techniques are available to the detectors. Because domestic smoke detectors are networked, even if the power goes out in the house, if one of them detects smoke, the others will also sound an alarm. Hospitals, gyms, office buildings, factories, shopping centers, and commercial buildings are the main locations for smoke detectors.