MRC DCC SYNCHRO SOUND 750
High Quality Digital Sound

Program the Synchro Sound 750 to the locomotive's address. As the
loco speeds up so does the diesel rumble. Throttle down and the
sound slows in sync with your loco. Add horn blasts, bell or
coupling sounds by using the F1, F2, F3, & F4 functions of your
DCC systems.

-Includes speaker with powerful amplifier
-Works with most DCC systems that have F1-F4
-Add the blast of a horn to accompany synchronized diesel rumble
-4 feet of wire for versatile mounting
-simple two-wire hookup