■ Equipped with digital shunting coupling - more fun guaranteed! ■ Motor stem and gearbox made of die-cast metal, therefore more dead weight and high tractive power ■ Rich detailing on the model with many plug-in parts and free-standing handrails ■ Authentic light and sound functions switchable via onboard decoder ■ Unobstructed view through the driver's cab ■ Buffer capacitor for uninterruptible power supply For shunting passenger and goods wagons in railway stations, the Deutsche Bundesbahn relied on smaller shunting locomotives at an early stage. The further development of the Köf 11, with power transmission via cardan shafts and additional axle drive, was presented by Gmeinder in 1965. Of this version, initially designated Köf 12, 251 shunting locomotives were delivered to the Deutsche Bundesbahn as the 333 series. From the end of the 1980s, most locomotives were equipped with radio remote control to make staff savings possible. These locomotives were designated as class 335. The locos has gone through several colour variations over time; from 1986, Orient red became the standard colour.