Needs to be wired into the accessories connectorFor radios that do not provide mic biasFeatures headset jack, positive action PTT switchBelt clipRugged RFI-shielded coil cordWhen connecting to one of the following radios and a DC 3800 intercom with remote mounting of the radio please reference additional adapter model 40107G-01. M400 Radius, Maratrac (Advanced Head), Spectra, Syntor X9000
