GS16E is a high fidelity paging microphone,the transmission distance can be 1 km,it is with an audio interface,built in bell generator,mute function,touched buttons,high-definition nixie tube display,.it can remote control 16 partitions to make different paging speeches. The remote distance can be 1 km.MIC input with individual volume adjustment knob,1channel of external audio resource (LINE) input.built in bell generator with volume adjustment knob. 1 channel of remote control RJ45 to make remote paging.