SiriusXM FMDA25 Direct Adapter Static-free audio connection for the Satellite Radio, hardwired directly into the vehicle's FM radio behind the dash. Easily switch between Satellite Radio and regular FM radio with a touch of the Satellite Radio's power button. Includes everything for most vehicle installations (antenna adapters may be required and are sold separately) Compatible with all SIRIUS branded Dock & Play and Portable Radios. Also compatible with XM Dock & Play and Portable Radios with a PowerConnect Vehicle Kit as well as with the XM SkyDock. Includes: FM Direct Adapter and user guide. Static-free audio connection for your Satellite Radio, hardwired directly into your vehicle's FM radio behind the dash. Easily switch between Satellite Radio and regular FM Radio with a touch of your Satellite Radio's power button. Includes everything for most vehicle installations Compatible with all SIRIUS brand Dock & Play and Portable radios. Includes FM Direct Adapter, User Guide