·  Dual-way window intercom(Set).
·  Streamline design, main unit is made of luxurious aluminum alloy and internal microphone for the extension. One-cable connection and simple installation.
·  High quality speaker for main unit and extension, high sensitive microphone, longer metal tube microphone for dual-way intercommunication.
·  Adjustable volume with separate switch.
·  Auto dual-way intercommunication without pressing any button.
·  Double-track adjustment with indicating light.
·  Spare record jack for the bank.
·  Ideal for any window, for instance bank, securities, post office, rail station, casher, insurance companies, booking offices, hospital etc.

Scope：

Instance bank、Securities、Post office、Rail station、Casher、Insurance ompanies、Booking offices、Hospital Etc.

Technical data:
·  Working voltage: DC9V
·  Max working current: 600mA
·  Main and assistant sound boxes: 2W-2W 100Hz-15KHz
·  Outside microphone: -48db±2db 20Hz-20KHz
·  Inside microphone: -48db±2db 20Hz-16KHz

Feature:
·  Dual-way intercommunication
·  Slim fit design of speaker
·  Anti-interruption and noise
·  Dual-way audio record