| 194 | Model for DC, without sounds |
|---|---|
| 194/E | Model for DC, ETS couplers, ETS power supply and sound effect generators (S) |
| 194/B | Model for AC, bogies, couplers and sound effect generators according to US standards, change of travel direction through stopping (3AC-0) |
| 194/T | Model for AC, high flange on wheels, couplers compatible with models of the "Tin Plate" era, change of travel direction through 20V impulse (3AC-1) (Märklin transformer) |