Directly pluggable train control relay extends control modules items 5224 and 5229 by the automatic train control but can also be used separately. Control modules can stop the trains automatically. This is possible by switching off (separately track and catenary) or in digital operation more authentically by switching to braking module item 5232 (for Marklin Motorola) or braking generator (for NMRA-DCC). Therefore it is equipped with bipolar switch. Relays have to be switched to minus. Contact load per changeover contact: 2 A.