Mobile phone signal shield device is mainly aimed at all kinds of examination rooms, schools, gas stations, churches, courts, libraries, conference centers, theaters, hospitals, governments, finance, prisons, public security, military places and other places where prohibit the use of mobile phones. Now the mobile phone signal shielded device on the market can limit the mobile phone signal from 500 meters away from the transmitter, the shielding radius is adjustable, the coverage range reaches more than 30 square meters, the mobile phone signal shielded device can only screen the mobile phone signal, but not affect other electronic equipment.Save power, power from 12W to 480W.
