Retevis RT-9908 3W/3W Anti-interference Bank Counter Window Intercom System Dual-Way Microphone

Streamline design. Main unit is made of luxurious aluminum alloy and 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
External speaker, slim fit design
Anti-interference and noise-free function
Comprehensive application of electro-acoustic technology experience, the selection of high performance electro-acoustic circuit design, the output power up to 3W, voice clear and loud voice distinguished high
Inside and outside the two-way voice signal output(recording by the bank teller), a stereo jack output mode can prevent voice recording function controlled by the power switch and the function buttons