Household smoke alarm has radiation?

With the development of the industry level, household smoke alarm gradually popularized, many families choose to buy a smoke alarm for his family´s safety escort. But, also some people on the safety of a smoke alarm, doubt, fear could produce radiation, endanger the health of their families. Then, the smoke alarm exactly have radiation? Here we discuss the problem.The current household smoke alarm the mainstream market is divided into two kinds: ion type smoke alarm and photoelectric smoke alarm (click to view more smoke alarm type).Photoelectric smoke detector with an optical maze, equipped with infrared tube, an infrared receiving tube receiving less than the infrared emission tube light from smokeless, when the smoke into the optical labyrinth, through the refraction, reflection, receiving tube receives the infrared light, intelligent alarm circuit judge whether exceeds a threshold, if more than the alarm. The sun contains infrared light, its radiation and weak, will not cause harm to human body.An ionization chamber ion smoke alarm, there are radioactive americium 241 (Am241). Americium can release Alfa flow, so that the local air ionization. Normally, it is in the ionization equilibrium state, when the smoke into the will and ion binding, thereby reducing the air conductivity. When the current to a certain value, then the alarm. Americium as a radioactive element, is certainly a radiation. But a smoke alarm in the dose is very small, only 0.8 micro Curie, americium decays into gamma rays, gamma ray energy decay is very low, penetration ability is very weak, and the ionization chamber has a protective shell, so almost no damage to the human body.To sum up, so long as you buy household smoke alarm manufacturers formal, you don´t have to worry about the radiation problem.