1) Ahuja CCS-2200 with Unique design, pleasing aesthetics & rugged construction. 2) Duplex communication technology, ideal for ticket counters, enquiry counters, banks, embassies, hospitals etc. Wherever two way communication is required across a glass barrier. (Can also be used for one way communication). 3) Compact & elegant Attendant Unit with gooseneck microphone, in black colour finish, for flexible sound pickup angle. 4) Separate switches for switching the Host Unit mic, or the External Unit mic, ON or OFF. 5) Separate volume controls on the Host Unit for adjusting the audio output level of the Host Unit and the External Unit. 6) Host Unit mic has automatic voice priority over the External Unit mic. When attendant is speaking into the Host Unit mic, the mic of the External unit is automatically muted. 7) Exclusively designed lightweight plastic external unit, which can be easily mounted on any flat surface. Double sided fixing pad provided. 8) External unit houses a condenser mic cartridge and an efficient speaker for clear and intelligible sound outside the glass barrier.