Bank Counter Window Intercom System Dual-way Intercommunication Microphone Interphone Speaker System 3W

Ideal for the bank, securities, hospital, bus station etc. where guard glass again theft is installed.
- Streamline design. Main unit has internal microphone for extension. One-wire connection and simple installation.
- High quality speaker for main unit and extension. High sensitive microphone. Longer metal tube microphone for dual-way intercommunication;
- Adjustable volume with separate switch.
- Auto dual-way intercommunication without pressing any button;
- Double-track adjustment with indicating light;
- Spare record jack for the bank;
- External speaker, slim fit design;
- Anti-interference and noise-free function;
- Dual-way audio record output

Specification:
- Power Adapter: Input AC 110V 60Hz US Plug. Output AC 9V 1.0A;
- Output Power: 3W(Max);
- Frequency Response: 100Hz-12kHz;
- Desktop Unit Dimensions: 158*87*46mm;
- Wall Mount Unit Dimension: 70*20mm
Trouble shooting:Whistle: Installation environment noise performance is poor, or too much other noise. Should make the distance larger between the host and the outside speaker or adjust the volume down.