radiation can be said to be a kind of radiation that people are afraid of. if the human body absorbs too much of this radiation, it will lead to the spread of human cancer cells and cause cancer. suffering from cancer will prove that death has targeted you, so how can people not be afraid! however, whether it is beneficial or harmful to the human body has a degree. even if it is beneficial to the human body and absorbed more, it will become harmful, and what is harmful to the human body will not affect the human body as long as it is not excessive. the same is true of radiation. for example, the radiation generated by the sun's ultraviolet rays, mobile phones, computers and other electronic products will not cause too much harm to the human body. the hotel security door adopts the principle of electromagnetic induction, and its radiation is also generated by electromagnetic reaction. compared with the radiation of electronic products such as mobile phones and computers, it will not have much impact on people. so neither the hotel nor the tenants need to worry.