What is wrong with Aico EI141RC Ionisation Detectors?
Ionisation detectors contain a very small amount of a radioactive element called Americium 241 (so small it is not harmful to humans), the element causes air molecules to form a small electric current inside the chamber of the detector. During a fast flaming fire smoke particles very quickly enter the chamber and disrupt the electrical current causing the trigger to sound the alarm. Although excellent at detecting fires quickly these detectors are also unfortunately prone to causing false alarms from regular domestic activities including burnt toast. The radioactive element although not harmful to humans in the small doses used in the individual alarms causes problems during mass manufacture and disposal.
Have Ionisation Detectors Been Banned and Where Can I Buy Them?