To reduce the driving tension on slow driving routes such as in tight curves, at construction sites or on slopes. Built-in 5 watt high performance resistors. The resistance value can be selected from 10 to 30 ohms by assigning the connection sockets. Short-circuit safe thanks to temperature-dependent overload shutdown. Overload indication by red LED. Can only be used on digital systems with uncontrolled locomotive decoders. Recommended for Model Builders and Collectors As of 14 Years. Due to scale and prototypical or functionally related design tips, edges and small parts. Therefore, Out of the Reach of Children Under 10 Years! With regard to the sales packaging we filled with goods for the first time and handed over to private end consumers, we have joined the nationwide return system o.