The ideal locations to install a photoelectric smoke detector include every room where someone sleeps. Place them in the immediate area of bedrooms and the path of exit from each room.
Queensland legislation requires all smoke alarms to be interconnected, so when one sounds, they all sound. This ensures a sleep hears the alarm even if they sleep with the door closed – it is recommended to interconnect your alarms no matter what your state legislation advises for this exact reason. Should any hallway or room in the home exceed 9.1 meters in length, photoelectric smoke detectors should be placed at both ends.
They should also be placed in stairways, stairways act like chimneys for smoke and heat which can rapidly cause a fire to spread. In addition to this, photoelectric smoke detectors should also be placed in any room where large electrical appliances are in use, such as portable heaters or humidifiers.