Retevis RT-9908 Window Speaker System,Intercom System for Business,Microphone Intercom,Window Intercom Speaker for Bank,Counter,Store,Restaurant

* Two-way voice intercom communications technology automatic identification of processing speech signals during a call does not require any action;this model is 110 Voltage * Auto dual-way intercommunication without pressing any button;anti-interference and noise-free function * Dual-way audio record output;dedicated anti-side tone processing chip with auto-mute function * Has special side tone processing chip and the movement noise function can effectively improve the noise * The voice from this system is clear and natural;this system has top-quality speaker and high-sensitive microphone. especially the metal tube microphone is deal for the counter and the dual-way intercommunication