Handsfree America's Otto 1 Wire Earphone Kit can receive only - not transmit. The 2.5-mm or 3.5-mm connectors plug into remote speaker microphones and 3.5-mm threaded connector plugs into a radio adapter.
The Otto 1-wire listen-only is also available for the following radios:
- EF Johnson
- Bendix King
- MA Com
Please contact us for your specific radio. 760-942-4321