·Fully automatic two-way intercom.
·Ultra thin external extension unit, compact in size and aesthetically pleasing in appearance. The external microphone is already placed inside the extension unit, with only one connection inside and outside, making installation simple.
·The internal unit must be plugged in with a vertical microphone to communicate with the external unit.
·The system plays realistic and clear sound, and the internal and external volume can be adjusted separately, and can be switched on and off separately.
·Microcomputer processing circuit, with noise suppression function, and completely solves the problems of echo and whistling.
·There is a recording jack that can output both internal and external audio signals (in conjunction with bank teller recording)