DN121IP 1 Amp Mobile Decoder with Integrated DCC Medium Plug

This product has been replaced by the 1 Amp Economy Mobile Decoder, 2 Functions, DCC Medium Plug on Short Harness (DZ123PS) and is no longer available. Click here to view the DZ123PS.

1 Amp (1.5 Amp Peak) Mobile DCC Decoder

Please use 3 step speed tables for all DZ121 & DN121 Series Decoders, because of size constraints in their processors, they do not support 28 step speed tables.

Non-directional headlights are NOT available on DN121 Series Decoders.

Retired in 2004


Current Rating-Motor
1.0 Amp (1.5 Amps Peak)
0.36” x 1.15” x 0.18” (9.14mm x 29.2mm x 4.57mm)
Integrated DCC Medium Plug
Function Outputs
Function Type
Standard* (read more)

Standard* functions turn functions on and off. These decoders offer automatically reversing head lights only.  With this type of function output, no additional function configuration is possible.  When you are using a standard* function output, simply hook up the function output to the function device and you will be able to turn it on and off from your throttle.

Replaced by