WOW121-Steam (1525)

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Multifunction Decoder:

Train Control Systems: WOW121-Steam (1525)

Summary: Universal sound decoder for locomotives with DCC-ready 21-pin MTC connectors, and can also be used with any of TCS' motherboards. The WOW121 requires a motherboard to interface with the locomotive. The motherboard determines support for the number of lighting functions.

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General information
Manufacturer Train Control Systems
MSRP 119.95 USD122.11 EUR <br />106.84 GBP <br />181.28 AUD <br />161.82 CAD <br />
Compare Prices Latest Prices
Product information
Part Number

Common Name WOW121-Steam
Decoder Core Features Motor, Functions, Lights, Sound

Product URL External Product Link
Hardware Information
Scales HO
Connection Method 21MTC / NEM660
Length 33 mm3.3 cm <br />0.033 m <br />1.299 in <br />0.108 ft <br />
Width 18 mm1.8 cm <br />0.018 m <br />0.709 in <br />0.0591 ft <br />
Height 5.6 mm0.56 cm <br />0.0056 m <br />0.22 in <br />0.0184 ft <br />
Continuous Amps 1.3
Max Amps 2
Voltage Range
General DCC Information
Extended Addressing Yes
Speed Steps 14, 28/128
User Loadable Speed Table Yes
Back EMF Yes
Programming Modes
Decoder Assisted Consists
CV Readback
Silent Running (HF) Yes
Kick Start
Momentum Yes
Function Information
# of Functions 8
Function Amps 100mA
# of Lighting Effects 20
# of Sound Effects
Programming Information
Programming Lock Yes
Decoder Programming Modes
Misc Items
SUSI Interface
Has computer interface
Firmware Upgrade Possible
UPC Number


  • CD Quality 16 bit Sound
  • Back EMF / Load Compensation
  • Quiet Drive: Super-quiet motor control
  • DC Mode
  • Momentum
  • Function Remapping
  • Programmable Lighting Effects
    • Dimmable
  • Decoder Lock
  • Fully compatible with Airwire™ operation.
  • Chuff cam
  • User-Loadable Speed Tables

1525 FAQs

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