EU621 21 pin decoder for Aussie HO Locos

This full featured BEMF, 6-function decoder is designed for HO-Scale locomotives equipped with a 21-pin connector. Included is our auto-adjusting BEMF for outstanding slow speed performance and hassle free set up. Also includes Quiet Drive for super quiet engine performance. Dimensions:  .797” x .614” x .185”  or  20.24mm x 15.58mm x 4.73mm