-. Binding : Electronics
-. Brand : Retevis
-. Color : Silver
-. EAN : 0631976692762
-. Feature : Auto dual-way intercommunication without pressing any button / Speaker length: 195 cm(75"): Enough to install whereever you want / Anti-interference and noise-free function;Spare record jack for the bank / Application: bank, securities, hospital, bus station Where guard glass again theft is installed / 1 year warranty(buyer should bear shipping fee) and 30 days no reason to return
-. Label : Retevis
-. Manufacturer : Retevis
-. PackageQuantity : 1
-. ProductGroup : Car Audio or Theater
-. ProductTypeName : TWO_WAY_RADIO
-. Publisher : Retevis
-. Studio : Retevis
-. Title : Retevis RT-9908 3W/3W Anti interference Noise Free Bank Counter Window Intercom System Dual way Intercommunication Microphone (Silver, 4 Pack)
-. UPC : 631976692762
Best Price and product.1 Year Warranty,just try it.

Features:
Working voltage: AC9V/1A
Main sound (sub sound): 3W
Inside microphone: -48db 20Hz-20KHz
Outside microphone: -48db 20Hz-16KHz
Exterior size: 158x87x46cm/78x20cm

Hot Spots:
Streamline design. Main unit is made of luxurious aluminum alloy and internal microphone for extension. One-wire 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;
External speaker, slim fit design;
Anti-interference and noise-free function;
Comprehensive application of electro-acoustic technology experience, the selection of high performance electro-acoustic circuit design, the output power up to 3W, voice clear and loud voice distinguished high;
Inside and outside the two-way voice signal output(recording by the bank teller), a stereo jack output mode can prevent voice recording function controlled by the power switch and the function buttons.


What's in box:
4 x Retevis RT-9908 counter interphone
4 x External speaker
4 x Charger

Trouble shooting:
Whistle: Installation environment noise performance is poor, or too much other noise. Should make the distance larger between the host and the outside speaker or adjust the volume down.