MÄRKLIN 74920 H0 Fully Automatic Railroad Crossing Item Description: Gauge: H0 With half barriers. Connects directly to C track. Two electromagnetic railroad crossings, each with two warning crosses and two red warning lights that illuminate when the barriers are closed. Ready to connect, easy to install. Contact track set: 3 straight tracks with a width of 94.2 mm. Dimensions of each base are 137 x 95 mm. Junk item No instruction manual I haven't used it for a long time, so I haven't checked the operation.