High Clear Dual Way Window Intercom System Bank Counter Interphone Loudspeaker for Pharmacy Railway Station Ticket Office High Clear Dual Way Window Intercom System Bank Counter Interphone Loudspeaker for Pharmacy Railway Station Ticket Office Counter Intercom Specification: 1. Two-way voice intercom communications technology, automatic identification of processing speech signals during a call, does not require any action; 2. Auto dual-way intercommunication without pressing any button; Anti-interference and noise-free function 3. Dual-way audio record output; 4. Has special side tone processing chip and the movement noise function can effectively improve the noise 5. The voice from this system is clear and natural; Has top-quality speaker and high-sensitive microphone. Especially the metal tube microphone is deal for the counter and the dual-way intercommunication 6. Have individual button to turn ON/OFF the MUTE funtion for both of side 7. Main base Dimension: 108*94*43mm Substation dimension: 80*20mm 8. material : High quality ABS _x000D_