security system reviews
It is also cheaper to manufacture. Compared to photoelectric smoke detectors, it consumes less power so a small battery can power it for month and is independent of external wiring. Since ionization type smoke detectors can detect particles smaller than smoke particles, they are prone to false alarms. Ionic smoke detectors use a radioactive isotope americium 241, and rules on proper disposal vary in each region. Some European countries have banned ionic smoke detectors. Aspirating smoke detectors ASD These are lesser known compared to ionic and photoelectric smoke detectors. It is best for rapid smoke detection is crucial like in a room filled with combustible chemicals and gases, and even tobacco. Pipe networks can be constructed leading to ASDs that can easily be hidden. This works well in hotels and posh offices where smoke detectors may look aesthetically displeasing. The National Fire Protection Agency recommend that people install combination alarms, that is, a combination of photoelectric and ionization technology. However few alarms combine both kinds of detection.