Indoor broadcasting system

The indoor remote broadcasting system is a broadcasting system that can be used to propagate information to outdoor speakers and indoor wireless (VHF, UHF) receivers using mobile phones or wired microphones. 
This system allows the competent municipal and provincial offices to broadcast disaster broadcasts or administrative broadcasts remotely and conveniently in case of emergency. (Based on web access control, wireless IP distribution method)
In addition, the system is designed to be used on mobile phones registered as administrators, so that you can accurately deliver notices to residents anytime, anywhere on your phone.