mrc transformer with walkaround throttle

mrc produces a transformer-tech 6 2a dc/sound control 2.0.it says it has a frount mounted receptacle for remote walkaround capability.who has these walkaround throttles? help would be appreciated. thyanks tuxedo.

MRC has the throttle. It’s made specificaly for the Tech 6: MRC - DC POWER Series - TECH 6 HANDHELD, Item: 0001203, TRAIN CONTROLS/DC POWER Check walthers.com – main page or MB Klein for stock.

once again,thank you very much. tuxedo