Features:  -All of our items are brand new.-Anti-interference and noise-free function-Two-way voice intercom communications technology, automatic identification of processing speech signals during a call does not require any action-Dedicated anti-side tone processing chip, with auto-mute function-Application of fully automated call control, outside the machine's microphone and speakers to use the integration of design and front-line system of the host to connect, easy installation-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-Application: bank, securities, hospital, bus station Where guard glass again theft is installed Specification: Power Adapter: Input AC 220V 50Hz               Output AC 9V 1.0AMain sound:3WInside microphone:-48db 20Hz-20KHzOutside microphone:-48db 20Hz-16KHzDesktop Unit Dimensions: 158*87*46mmWall Mount Unit Dimension: 76*18mm  Package includes:  1 x Desktop1 x Wall Mount1 x Power adapter(Also come with a plug adapter according to your country)1 x User manual Details pictures: 
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