Dual Way Intercom Speaker System Talk Through Store Office Window Dual Way Intercom Microphone With Double Speaker

You can use the conversation between the inside and out side of the window for the customers' evaluation of the salespersons, and for the supervisor's evaluation of each window.1.Usage: the bank staff use the master station to talk with guests. and the guests use the substation can talk with bank staff as well. 2.Installation: the master station is installed in the working place and the sub station out of the working room. Just one wire connection between the master station and substation.3.Application: bank, stock office, hospital, post office, Box office, Toll station, etc. Functions and Features: 1.Hands free two-way talkback full automatic.????????????? 2.Clear sound .High-quality speaker and high-sensitive microphone, the voice is realistic and clear 3.Reminder light.There are voice transmission indicator to prompt the working condition4.With Mic interface,support external microphone5.with inside and out side volume knob. the volume of internal and external can be adjusted by separately?6.With power on /off knob ???????7.With output for recording, can connect record equipment external8.with two EXT port,one main-base can work with two sub-base .9.High power-3W high power speaker .Widely used in many applications, such as bank, clinic, government，store, pharmacy, and so onTechnical Parameters: Working voltage: DC12V? Material : Aluminium + ABSWorking current: ≤300mA? Microphone : 45dB±2dB 10Hz-15KHzOutput power of sub-base Speaker: 3W Output power of master:2WEnvironment term: -10oC~60oC Cable Length : 2M silver Main base :1537840mm Sub-base: 8022mmBox size : 2415*8CM Package Includes: 1 x Master Station;1 x Extension ;1 x Power adapter 1 x English manual1 x Double-sided tape