Controller for sends

[TheNY]

I am looking for a controller that will allow me to send tracks to sends. Preferably without keys because I already have two. It would be good if it works on selected tracks and not all channels, because it works better for me. The best option for me would be to create some remote maps but only if it would be work on the selected track. It is possible? I have launchkey37, launchcontrol xl and komplete kontrol s61 so I have something to assign the knobs to.