Rockwell Automation 2755-DM9, -DM9E High Speed Decoder - Manual (Page 16)

Chapter 2
Description of Hardware
2–6
Two DC output modules (Catalog No. 1781-OB5S) are provided with the
decoder. You can add up to six more AC or DC output modules for a total of
eight. Module location #8 can also accept an input module for auto loading
match codes (refer to Chapters 3 and 4). All output module types can be
installed in any of the eight module slots. You can program the decoder to
turn on these output modules based upon the conditions you specify during
configuration of the decoder. Use these outputs to operate electromechanical
devices such as relays, alarms, etc. Fuses protect the decoder from power
overloads.
Figure 2.4
Output Modules
90-061-4
Output Modules