1. Indoor effective shielding mobile phone signal, shielding distance reference to local field strong strength, shielding effect 1-20 meters.
2.Mainly used in the examination room, court, venue, library, theatre, church, hospital and other places that need to be confidential, quiet, anti-disturbing.
3.Effective shieldingCDMA (China Telecom), GSM (China Mobile, China Unicom), DCS (1800MHz), PHS (1900MHz), 3G, 4G and all mobile phone signals and WIFI (WiLAN), Bluetooth/2.4G communication, wireless network (QQ and Weibo, etc.), pinhole camera signal