SSPRR Run Room

Playing with Toy Trains

Depotronics - Early 1990 solid-state units


Products were cataloged in 1992 and Depotronics is no longer in business.  Depotronics products are frequently found with 3-Rail O-Gauge electrical materials.

Watchman III

This unit was used to control two conventional trains on one track using the timer.


Circuit Board

Catalog Description Contacts


Notes 1

Notes 2


Schematic One

Schematic 1

Schematic Two

Schematic 2

Schematic Three

Schematic 3

Wiring Guide on Unit Base

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