 Also, some of Märklin's digital components (such as the Mobile Station) are made in Trix versions with different colours and another logo; but otherwise identical and fully compatible with Märklin's.For a number of years Trix has made two-rail versions of many Märklin models with only minor differences, such as axles (electrically insulated) and for powered models (being of lighting and/or a motor) power pickup.Outside Europe, the Minitrix brand is very popular in the United States of America.