Due to the vertical travel required the Braun lift Newmar uses is a commercial model and doesn't have a remote option.
I took our CS3911 to my local mobility dealer and they were able to connect an aftermarket remote control to the lift. Works great and we rarely use the tethered remote. It was expensive but the functionality was well worth the investment.
Not sure how they did it but your local mobility dealer should be able to help you out.
'19 Canyon Star 3911, Konis, Sumos, Sway bars, TPMS
'10 Honda Element, BlueOx, RM Nighthawk, Invisibrake