Every year people are killed in fires at home because their smoke alarms failed to work due to flat or missing batteries.

• Once a week test the battery - press the test button until the alarm sounds.

• Once a year change the battery (unless it's a 10-year alarm).

• Twice a year open the case and gently vacuum the inside to remove dust from the sensors. If it doesn't open, vacuum through the holes.

• After 10 years it's best to replace your alarm with a whole new unit.

My alarm keeps going off - What's the problem

False alarms can be annoying but are easy to prevent. Whatever you do don't remove the battery or disconnect the alarm.

The usual problem is placing the alarm too near the kitchen - where it can be set off accidently by smoke from cooking or making toast. Follow the advice on fitting and try moving the alarm to a less sensitive area. Or, replace it with a hush or silencer button alarm.

WARNING! False alarms can also show that your alarm needs servicing.

• Vacuum the alarm to remove any build-up of dust dirt.

• If your smoke alarms starts to 'beep' regularly, you must replace the battery as soon as possible. If it is a 10 year alarm, you should replace the whole unit.