DZ-1220 Trolley Stop & Control Announcement System | O or S gauge

City streets come to life with this fun accessory designed especially for mass transit equipment.
Chicago streets are pre-recorded, but you can record up to 9 custom stop announcements. Sounds the classic “Clang-Clang” of a trolley bell or a “Doors Closing” warning. Cars automatically stop at the end of the line and then reverse (works with E-units or car bumpers) for the return trip. 
DC unit reverses voltage. Route stops can be set using sensors (or isolated rail), timing or pushbuttons. Cars restart automatically after a selected pause time. The unit monitors the direction of travel so stop announcements are made in the correct order on each trip.