©2006 Publications International, Ltd. In the Australian State of Queensland, from 1 January 2017 all smoke alarms in new dwellings (or the place a dwelling is considerably renovated) should be photoelectric, not additionally comprise an ionisation sensor, be hardwired to the mains power supply with a secondary energy source (i.e. battery) and be interconnected with every different smoke alarm within the dwelling so all activate collectively.
Though photoelectric alarms are extremely efficient at detecting smoldering fires and do provide adequate protection from flaming fires, fireplace security consultants and the Nationwide Fire Protection Company recommend installing what are known as combination alarms, which are alarms that either detect both warmth and smoke, or use both the ionization and photoelectric processes.
But ionization alarms, which use a small little bit of radioactive materials to trip the alarm when it detects small burning particles, have been shown to be much less able to … Read the rest