Mobile phone signal jammers are mainly aimed at all kinds of examination rooms, schools, gas stations, churches, courts, libraries, conference centers (rooms), theaters, hospitals, governments, finance, prisons, public security, military areas and other places where the use of mobile phones is prohibited. It is understood that the mobile phone signal jammers on the market can limit the mobile phone signal within 500 meters from the transmitter. The shielding radius can be adjusted, and the coverage can reach more than 30 square meters. The mobile phone signal blocker can only shield the mobile phone signal without affecting other electronic equipment. Save electricity, the power is 12W--480W.
