The Clear-Com KB-702 remote speaker station lets you select between two channels of party-line communications and have the ability to talk and/or listen on the selected channel. You can listen via the integral speaker (or can use a headset or telephone-style handset) and can talk via a headset mic, a telephone handset, or a push-to-talk microphone.
The KB-702 can be wall or console mounted in a standard 4-gang electrical box, or mounted in the optional V-Box for desktop, surface-mount, or portable applications.