Description:
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. Especially 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.

Feature:
Dual-way intercommunication
Slim fit design of speaker
Anti-interruption and noise
Dual-way audio record
Performance Data:
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 / 6.2x3.4x1.8(13.2)in
Sub-box size: 91(D)x23(H)mm / 3.58(D)x0.9(H)in
Package:
1 x Dual-way counter interphone
1 x External speaker
1 x Charger
1 x English User Manual