Manoeuver the caravan by radio control to every place you wish, even turning it on the spot is possible, also at difficult terrains. Without any help - simply to push the button. Two 12 Volt engines activate the tyres across distributing rollers. 12V battery larger than 50Ah ( 88Ah would be better) necessary. A high input rating up to 25% inclines with caravan weight of 1200 kg, a soft start during driveaway for a low burden of the chassis. For caravans up to 2 t maximimum weight. Powered by electrical engines the drive rollers can be pressed from one side at the tyres coevally. Mounting without welding is possible. Please ask at the specialised trade. Incl. ABE, no TÜV acceptance is required.