It can be applied at meeting room, conference room, museum, gallery, theatre, concert hall, church, temple, restaurant, classroom, training center, factory, bank, train, bus, etc. For some locations of special purpose such as hospital, gas station, etc., please do field test first to make sure no interference happened to the normal operation of their equipment and instrument...It’s easy to install and operate the device. No adjustment is needed.If not well paralyze happened, please change the installation location or position and check if any cellular control stations or repeaters installed just in nearby.