I used to have a MRC HO hand held controller. It used fixed 12 volt dc as input and it was transistor controlled. It had a brake handle with run, lap, service and emergency if I correctly remember. I cannot remember the model number and a google search can’t find it. Any help appreciated to find the model.
Sorry for the late reply. Dont check this subforum often. I think Ive got one of those. Model 77 Cab Control.
Heres an online photo. https://www.worthpoint.com/worthopedia/ ... 1980235217