Optical (photoelectric) smoke detectors use light beams to detect smoke particles. Ionization smoke detectors use ionized air to detect changes caused by smoke particles. Combination detectors may incorporate both technologies for increased sensitivity. Fixed temperature heat detectors activate when a specific temperature threshold is reached. Rate-of-rise heat detectors trigger alarms based on the rate at which the temperature is increasing. Optical flame detectors use sensors to detect the characteristic light of flames. Infrared flame detectors identify specific wavelengths associated with flames. Acts as the central hub that receives signals from detectors and triggers alarms. Provides information on the location of the detected fire. Audible Alarms: Sirens, horns, or speakers produce loud sounds to alert occupants. Visual Alarms: Strobes or flashing lights provide visual alerts, essential for occupants with hearing impairments.
