Whether it is an ionized smoke detector, a photoelectric smoke detector, or a dual smoke detector, they have different claims to fame. Before we delve into them, let’s recall that smokes of flaming fire and smoldering fire are different from each other.  If the smoke is of flaming fire, an ionization smoke detector is quicker to signal the central fire alarm system. On the other hand, a photoelectric smoke detector supersedes the former in recognizing the smoke of the smoldering fire.  The dual smoke detector stands out with the functions of both ionization and photoelectric smoke detectors.