Features: Easy to Use Dual-way intercommunication Dual-way audio record Anti-interruption and noise Slim fit design of the speaker Aluminum alloy shell and the extension has a built-in speaker. Input voltage: AC 110-240V Best Choice: It suitable for the Bank, Securities Company, Hospital, Station where the security glazing is installed. Specificationï¼š Working voltage DC9V/0.5A Input voltage AC 110-240V Main sound (sub sound) 2W, 100Hz-15KHz Inside microphone -48db 20Hz-20KHz Outside microphone -48db 20Hz-16KHz Cable Length 1.6m/5.25ft Main box size 158x87x46(335)mm / 6.2"x3.4"x1.8"(13.2") Sub-box size 91x77x23mm / 3.6"x3"x0.9" Package Include: 1 x Dual-way counter interphone 1 x External speaker 1 x Charger 1 x English User Manual
- High quality: This system has a top-quality speaker and high-sensitive microphone. Especial the metal tube microphone is a deal for the counter and the dual-way inter-communication.
- Streamline design: The main unit has an aluminum alloy shell, and the extension has a built-in speaker. This system has a simple connection for DIY operation.
- Simple operation: This system haw two knobs to adjust the inside and outside volume. When the indicating lamp for audio turns green, the intercommunication could begin.
- Simple Operation: You could record the voice through record jack. Easy for dual-way intercommunication without pressing the button.
- Dual-way intercommunicationï¼ŒDual-way audio record, Anti-interruption, and noise. This system has a simple connection for DIY operation.