Installation
Most battery-powered smoke alarms can be easily installed by the home owner or a maintenance contractor and do not require professional installation. Hard-wired smoke alarms, however, will need to be installed by a licensed professional.
Always install a smoke alarm in accordance with their instructions. They are usually most effective when located on the ceiling, preferably away from walls and fitings. The best locations are in hallways leading from bedrooms and in sleeping areas.
Since smoke alarms respond to airborne particles other than smoke, it is better not to install them in kitchens, bathrooms, laundries and garages. If possible, avoid areas with strong drafts. Note: If a garage etc is a separate level a smoke alarm must be installed. Take care with installation in these areas.
Diagram: Proper mounting of smoke alarms .   Where smoke alarms are to be located in a building, and the number required, depends on the building's use (classification), size and layout. The new Regulation sets out what is required, as explained below.
The general principle is that smoke alarms should be positioned to detect smoke before it reaches sleeping occupants. The sound emitted by the alarm is designed to wake occupants, giving them time to evacuate.
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