Hear 2way Radio Through Vehicle Speakers with CBM-U4
When receiving incoming message on 2way radio CBM-U4 automatically mutes stereo and switches the front 2 speakers to 2way radio voice. making sure you never miss another radio transmission. This works with 2 speaker or 4 speaker stereos that have speakers wired straight from stereo to speakers.(no amplifier).
Amplifier compatible model also available.(Aux RCA)