Determine the correspondence of the wire colours to the push-to-talk key adapter contacts, ringing out the wires and adapter contacts with each other using multimeter. Connect the Omnicomm OKO terminal voice communication set according to the diagram:

1. At the installation site, drill two holes Ø2.5 mm:

2. Drill a rectangular hole 30×12 using a milling cutter or a drilling bit and install a push-to-talk key adapter

3. Fix the push-to-talk key adapter on the surface with self-tapping screws

4. Connect the push-to-talk key connector with the adapter connector: