SMOKE AND HEAT ALARMS
It is a legal requirement that all new homes are fitted with approved smoke alarms in the hall and on the landing. In all cases these are powered by your mains electrical network but additionally have a back-up battery to ensure that in the event of a power outage you are still protected. As the name suggests, the unit senses smoke which triggers a high volume tone to alert you of a possible fire.
From time-to-time use the test button to ensure that the system is fully operational and, when the battery needs replacing (usually a repetitive audible tone will notify you of a flat battery) make sure that it is!
Kitchens also have an alarm, but this is slightly different in that it senses heat, not smoke … to overcome the annoyance of ‘burnt-toast’ triggering a false alarm.