SoundTraxx DCC Mobile Decoder MC2H104AT
 
HO-scale, 4-function decoder that measures 74 x 17 x 3mm designed to replace the existing manufacturer light board in Atlas HO diesel models, some InterMountain Railway models, and those using a similar physical design. This decoder will operate in both DC and DCC.
 
Dimensions: 74 x 17 x 3mm
Max. Motor Stall Current: 1A 
Max. Function Current: 100mA (each output)
Function Outputs: 4
DCC Track Voltage: 21 Volts Maximum
 
MSRP is $28.95  852002