Dual Way Window Speaker Intercom Business Microphone Intercom Mic and Speaker for Bank Counter Store Restaurant Hospital

Features:--Dual-way intercommunication--Dual-way audio record--Anti-interruption and noise--Slim fit design of speaker--Input voltage: AC 110-240V--Streamline design: The main unit has aluminum alloy shell, and the extension has built-in speaker.This system has simple connection for DIY operation.--High quality: This system has top-quality speaker and high-sensitive microphone. Especial the metal tube microphone is deal for the counter and the dual-way inter-communication.--Good performance: The voice from this system is clear,and natural. There is a switch only for the volume control.--Advance technique: For this system,we adopter the advanced microcomputer from U.S.A.--Definite instruction: The indicating lamp shows the track's working status.--Simple operation I: Easy for dual-way intercommunication without pressing button.--Simple operation II: 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 III: You could record the voice through record jack.--Best Choice: It suitable for the Bank, Securities Company , Hospital, Station where the security glazing is installed.Specification:--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 included:1 x Dual-way counter interphone1 x External speaker1 x Charger1 x English User Manual