RadioSport miniXLR 6P Headset interface, Kevlar reinforced 26 AWG leads with Teflon insulation, 3.5mm right angle Mic & Stereo Headphone Interface, Mono/Stereo Switch with Headset PTT Interface & RCA Y Cable.
This allows you to use Headset PTT and an RCA Foot Switch or Hand Switch at the same time.
The picture shows the RadioSport RS60CF
and Foot Switch
connected to a Flex-6600 using the CS6-FLX-PTT.
For Flex 6400(M)/6600(M)