A hardwired smoke alarm is connected to the mains power and has a battery back-up. The battery back-up works if the power fails.
The battery back-up must work under normal operating conditions as follows:
Note that hardwired smoke alarms must only be installed by a licenced electrical contractor in accordance with the Queensland Electricity Safety Act.
The battery must be non-removable and provide power to the smoke alarm for at least 10 years without being recharged.
If cooking sets off the smoke alarm, do not disable it. Turn on the rangehood/exhaust fan, open a window or wave a handtowel near the smoke alarm until it stops beeping. Use the hush button if the smoke alarm has it. If issues persist, consider relocating the smoke alarm.
Every month check the smoke alarm by pressing the test button. If you cannot reach the button, use a long object such as a broom handle.
Replace the back-up battery on hardwired alarms:
Most alarms will emit a short ‘BEEP’ when the batteries are low. This is a reminder to replace the battery.
Smoke alarms must never be painted.