Window Speaker Intercom System Bank Counter Window Intercom System Anti-Interference Dual-Way Intercommunication Microphone for Bank,Business,Hospital,Station,Post Office,Restaurant,Ticket counter etc

Features? 1.Fully automatic two-way intercom system, no need to press buttons, despite talking 2.The internal and external volume can be adjusted separately, and the use of scale prompts,intuitive and more reasonable operation 3. Adopt aluminum alloy panel and easy installation, simple connection for DIY operation 4. High quality speaker and high-sensitive microphone, the voice is realistic and clear 5. Using a 4 core high-strength aluminum foil shielded wire, and strong connection plug 6. With recording jack can be output both inside and outside the two-way voice signals (such as the bank teller system for recording) 8.Independent control: (1)Power control,Office intercom system has a switch button; Easy to use and operate (2)Independent volume control,Independent internal and external mute control; The volume level can be adjusted according to the environment (3)Inside and outside mute switch,Independent internal and external mute switch design; Bank teller can freely control the input and output of sound Specifications? 1. Material: aluminum alloy shell 2. Connection cable length: 2m 3. Working voltage: DC9V / 300mA 4. Adapter: AC 110V , 50 Hz 5. Main sound (sub sound): 3W+3W 6. Microphone sensitivity: -46db±2db 20Hz-16KHz 7. Size: 118 x 90 x 45mm / ?67x 20mm Packages: 1 x Dual-way counter interphone 1 x External speaker 1 x Power adapter 1 x English manual