Does the mobile phone signal jammer used by the school during the exam have electromagnetic radiation?
At present, as long as it is a relatively formal or high-profile examination item, it is already commonplace to install mobile phone signal jammers in the examination room classrooms. The purpose is to prevent candidates who take the examination from secretly using mobile phones during the examination. and other wireless communication tools for illegal cheating. Over the years, from time to time, some candidates or parents will ask such a question: worry about whether the shielding signal emitted by the cell phone signal jammer has strong electromagnetic radiation after it is turned on and used? Will this affect the examinee's normal answering process? Then the question arises: Does the mobile phone signal jammer used by the school in the exam have electromagnetic radiation?
First of all, it is necessary to correctly distinguish the difference between electromagnetic radiation and nuclear radiation. In fact, when many people hear the word "radiation", they will feel fear and fear, and always want to avoid it. But in fact, these people confuse the concepts of electromagnetic radiation and nuclear radiation in their initial impressions, and even treat the two types of radiation directly and equally, which is completely wrong.
Electromagnetic radiation and nuclear radiation are two completely different situations. The harm and influence of nuclear radiation are indeed huge and long-lasting. But nuclear radiation is not common. Electromagnetic radiation is different. Only when the intensity of electromagnetic radiation reaches a certain level can it have an impact on human health, and electromagnetic radiation is very common. It can even be said that electromagnetic radiation has always accompanied our daily life. The mobile phone signal jammer is a wireless interference signal transmitted, and its power supply, within a relatively short distance around the transmitting antenna, can indeed measure a certain amount of electromagnetic radiation. But don’t worry, because the mobile phone signal jammer is an electronic product, and almost all electronic products produce electromagnetic radiation, such as the most common ones in our lives: mobile phones, computers, microwave ovens, TVs, printers, scanners, etc. . The only difference is that different electronic products have different intensity of electromagnetic radiation.
Refer to the public exposure derivation limit (power density of 0.4w/m²) issued by the state in the "Regulations on Electromagnetic Radiation Protection" (GB8702-1988), it can be known that as long as any electronic product can meet this electromagnetic radiation standard after testing, then There is no need to worry about the harm of electromagnetic radiation produced by this product. The same applies to mobile phone signal jammers.
Nowadays, as long as it is a regular manufacturer of mobile phone signal jammers, it will send the product to a regular product testing and certification unit, especially for testing such as whether the electromagnetic radiation is safe or not, the manufacturer will not take it lightly.
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