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The ionized air carries electrical current and maintains that current, until something disrupts the air molecules. When the air molecules are disrupted, usually by smoke, the current drops, and an electrical circuit sound the alarm. Ionization smoke detectors are said to be cheaper to manufacture, but the downside is that they are prone to false alarms. They sound the alarm at the slightest degree of disruption in the ionized air, even from ordinary smoke in the kitchen. Types Of Smoke DetectorPhotoelectric smoke detectors or optical smoke detectors They are widely available, but recently smoke detectors using ionization technology and laser technology are making an introduction in the market. Photoelectric smoke detectors can detect slow, smoldering smoke the fastest, like the thick smoke when a couch or mattress is one fire.security homes
00 at Pros: Easy to install. HD video. Cloud recording. Motion detection notifications. Cons: Pricey. No on demand video. Audio could be better. Short battery life. Bottom Line: The Ring Video Doorbell lets you use your smartphone to see who is at your door before you open it. It offers motion detection, push notifications, and video recording, but audio quality is inconsistent and battery life could be better. Read ReviewSimpliSafe Video Doorbell Pro ReviewMSRP: $169.