Deta 1163 Mains Powered Hard Wired Optical Smoke Alarm with 9V Battery Back-up

Optical Smoke Alarms are recommended by British Standard 5839-6 for circulation areas. Detas Optical Smoke Alarms incorporate the latest optical sensing technology, which is more sensitive at detecting large particles of smoke which tend to be produced in greater amounts by slow smouldering fires. Suitable for use within hallways and landings, as well as living rooms and bedrooms. This is the n...