GM-20 is a paging microphone with cardioid polar pattern for general public address and communication use.
It can be use on ticket booth, reception, information center, public adderss, conference system,church, broadcasting.
And also can application for bank, post office , cashier desk, railway station, stock-exchange.
Yo-tronics is a headphone ,and microphone supplier, manufacturers in Taiwan.
We inherited and originated from Yoga Enterprise Group ,and have our own factory in china.