Headset Amplifier And Interface Module

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Headset Amplifier And Interface Module Provides Headset Interface For Phone Without A Headset Jack Adjustable Amplification Of Headset Transmit And Receive Powered By 12v Power Sup ply (included) Or 2 Aa Batteries (optional) Headset On/off Button Mute Button Headset Volume Control Inuse Indicator Led 3 Rj11 Ports For Headset Telephone Handset And Telephone Brand: Cortelco Show more