KB702GM 2-Channel Select Flush-Mount Headset​/​Speaker Station

KB-702GM 2-Channel Select Flush-Mount Headset/Speaker Station with
Mic Jack and Vox, Mounts in V-Box (as show in picture below), Console
or Accessory Enclosure (8.25" X 4.5")

KB-702 GM provides a remote speaker station permits the user to
select between two channels of party-line communications...