Märklin 7221 Alarm Bell - Working Vintage Item Original Box Included This is a magnet-operated alarm bell, adaptable to all gauges. Please refer to the catalog excerpt for specifications (Photo 3). Operation has been confirmed using a Märklin HO gauge transformer. It makes a "gzzzz" sound, followed by the final "ding" of the bell. It has been used in this state for a long time, but it is uncertain whether this is the original sound. As it is an item of age, separate maintenance may be required. It has become a rare item to obtain these days. I am selling it to organize my collection. Due to long-term storage after use, there are some rust, scratches, and dirt. There may also be other age-related deterioration. The original box is quite damaged. In any case, please understand that this is an old item before considering a purchase. Please refrain from purchasing if you are sensitive to such issues or are looking for new-quality items. #MiniClub #ZGauge