This is the matching locomotive sound unit for the LGB 25570 F7A Pennsylvania Railroad #9833 Diesel Locomotive. This unit must be connected by two cables to the F7A unit to produce the diesel locomotive's opeating sounds, and the horn and bell sounds, that are sent to the speaks in both units. There's a reed switch installed into the F7B unit's rear motor block that will activate the F7AB locomotive's horn and bell when crossing over LGB 17050 track magnets fitted between the track rails. Comes with the LGB Red Box with Styrofoam Insert, LGB User Guide, and two LGB 17050 track magnets.
There's a 12 Months Warranty on this LGB locomotive - See coverage at top of the page.