1、Window Speaker System: Featuring high sound quality speakers and high sensitivity microphones, the system is designed for counter and two way intercommunication. 2、Pure Sound Quality: This intercom system uses electro acoustic circuit devices with excellent performance. Both the main and auxiliary machines have clear voices and high voice resolution. 3、Automatic Control: The intercom system adopts duplex voice intercom communication technology, which automatically recognizes and processes voice signals, and does not require any operation during the call. 4、Wide Application: The intercom system is suitable for places where safety glass is installed such as bank windows, ticket offices, hospitals, embassy visa offices, and securities companies. 5、Easy Operation: All you need to do is connect the power adapter and external speakers to the main station, the mic cable is flexible, and there are two knobs to adjust the internal and external volume. Item Type: Window Speaker System Material: Aluminum alloy Color: Silver Output: DC 12V 1000mA Peak Output: 2 x 3W (Maximum) Frequency Response: 100Hz-12KHz Scope of Application: It is suitable for places where safety glass is installed at bank windows, post office windows, embassy visa offices, securities companies, hospitals, stations, etc. 1 x Microphone 1 x Speaker 1 x Power Adapter 1 x Sticker 2 x Wire Fixer 1 x Instruction