2-Channel Select Flush Mount Headset/Speaker Station Mounts in V-Box or Accessory Enclosure (8.25" X 4.5") The KB-702 remote speaker station permits the user to select between two channels of party-line communications, with the ability to talk and/or listen on the selected channel. The user can listen via the integrated speaker, or may use a headset or telephone-style handset - and can talk via a headset mic, a telephone handset, or a push-to-talk microphone.