The Sony RMX40 Audio Remote Control is originally supplied with Audio System models: Sony 10600, Sony CDX5100, Sony CDX5270, Sony CDX5272, Sony CDX600DSP, Sony CDXC410, Sony CDXC610, Sony MDX400, Sony XKR100, Sony XRC450 Sony XRC500 Sony XRC720

The Sony RMX40 Audio Remote Control is compatible with Audio System models: Sony CDX5060, Sony CDX5460, Sony CDX71, Sony CDX71RF, Sony CDXC460, Sony CDXC480, Sony CDXC560, Sony CDXC590, Sony CDXC660, Sony CDXC760 Sony CDXC860 Sony CDXU6260 Sony DCXU6260 Sony XRC190 Sony XRC350 Sony XRC550 Sony XRC7200 Sony XRU500 Sony XRU700 Sony XRU700RDS Sony XRU800