The signal jammer is widely used in school examination room, prison detention center, company conference room and other occasions, especially the school examination room is the most important place to use. So, how to select these signal shielding devices? What problems should education departments pay attention to when purchasing signal shielding equipment? What is the difference between shielding equipment with different prices?

In fact, the price range of signal jammers is very large, ranging from hundreds of yuan to thousands or tens of thousands of yuan. Some prisons and detention centers use high-power signal shielding equipment, which costs about tens of thousands of yuan. Most of them are used in sensitive places in some areas. Some signal jammers used by secret organizations or some special organizations and enterprises also have high requirements, such as medium power shielding products or specially customized enhanced products, the price will also reach several thousand yuan. As for the shielding devices used in school examination rooms, generally due to the cost budget and other reasons, the use requirements are relatively low, and the price is generally about 1000 yuan. The products within this range can also be divided into high, medium and low grades. There are differences in shielding effect, continuous working time, heat dissipation, noise, etc., which mainly depend on the actual needs of the users. As for some signal shielding products worth about twoorthree yuan, they may simply attract attention with low prices. After all, the price of materials is there, so it is not recommended to buy them.