First of all, we should distinguish between electromagnetic radiation and electromagnetic pollution. Electromagnetic radiation is everywhere and all the time. Only when the energy reaches a certain value will electromagnetic radiation become electromagnetic pollution and cause harm to human body.
A small amount of radiation can completely offset the influence of the human body's own adjustment ability. Appropriate electromagnetic radiation is not only harmless to people, but also beneficial to people. Compared with the same kind, it is almost a "one machine" with manpower. Whether you are GSM, CDMA or PHS, you have electromagnetic radiation problems.
The electromagnetic radiation generated by wireless routing is very weak, similar to radio equipment such as radios, which is much less than the radiation after the mobile phone is connected, but wireless routing works continuously (that is, continuous radiation). Compared with the non-long-term continuous radiation of mobile phones, the total radiation generated by wireless routing will be higher.
China's Radio Management Committee stipulates that the transmission power of WLAN products should not be greater than 10mW, and other standards are relatively loose. For example, the upper limit of the transmission power of WLAN products in Japan is 100mW, while that in Europe and America is about 50mW.
At present, the products sold on the market generally meet European and American standards. When the power of mobile phone is high, it can reach above 1W, and the transmission power of most wireless routers is between 50mw- 100 MW, while the power of wireless network cards is generally below 100 MW.
The radiation of wireless network mainly depends on the transmission power, and the closer to the wireless transmission point, the stronger the radiation. Therefore, wireless routing and wireless AP should be placed far away from people, and attention should be paid to avoiding wireless products from being too close to audio, television and other electronic equipment to prevent mutual interference and other radiation.
As long as you keep a long distance, avoid the cumulative effect caused by living in a wireless network environment for a long time, and develop good habits, there is basically no problem. Stay away from the bedroom, try to avoid the elderly, children, pregnant women close, long-term contact with wireless routers and other equipment, turn off the power before going to bed at night.
Radio signals follow the inverse square law like light, sound waves and gravity, that is, the distance is doubled and the energy is reduced to a quarter. In other words, the signal strength decreases rapidly with the increase of distance. At the usual distance, the signal strength of wireless network is so weak that there is no need to worry at all: it is only part of the "radio smoke" formed by radio, TV signal, alternating current, household motor and the vast universe.
So don't worry about the harm of radio generated by radio communication to your health.
Extended data:
Wifi wireless router actually converts wired network signals into wireless signals through wifi wireless router for computers, mobile phones, PDA and so on to receive. The technology that supports it. For example, ADSL and residential broadband at home can access the Internet wirelessly by connecting a wifi wireless router.
Related signal: the "effective working distance" mentioned in the parameters of the example router, which is also one of the important parameters of the wireless router; As the name implies, other computers can only connect wirelessly within the signal coverage of the wireless router.
"indoor 100 meters, outdoor 400 meters" is also an ideal value, which will vary with different network environments; Generally, indoor wireless signals can be within 50 meters, and outdoor wireless signals can only reach about 100-200 meters. The signal strength of wireless routers is also greatly influenced by the environment.
Reference: Baidu Encyclopedia -wifi Wireless Router