- Built in sealed battery cell lasts 10 years under normal conditions
- Fitted with an optical sensor that is less prone to nuisance alarms from cooking fumes
- Ideal for locating in rooms adjacent to kitchens
- Low battery warning if the battery capacity runs low a chirping noise will be emitted once every 40 seconds
- Provides an earlier warning of slow smouldering fires such as a cigarette burning on furniture & bedding as compared to alarms with an ionisation sensor British Standards advise that both smoke alarms with optical sensors & ionisation sensors such as the Fire Angel Smoke Alarm are fitted on each level of the home to maximise protection against slow smouldering fires as well as fast flaming fires.