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Multifunction Decoder:

Train Control Systems: TCS T4X

Summary: This small decoder features BEMF and quite drive. It may be hard-wired or plugged directly into any locomotive with a 9-pin JST plug. The T4X may be used in locomotives which have ditch lights in addition to forward and reverse headlights.

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TCS T4X.webp
General information
Manufacturer Train Control Systems
MSRP 69.95 USD71.21 EUR <br />62.30 GBP <br />105.72 AUD <br />94.37 CAD <br />
Compare Prices Latest Prices
Product information
Part Number
Decoder Core Features Functions, Lights, Motive"Motive" is not in the list (Functions, Lights, Motor, Sound, Turnout) of allowed values for the "Has Decoder Feature" property.

Product URL External Product Link
Year Released 03/2016
Predecessor TCS T1
Hardware Information
Scales HO
Connection Method JST
Length 24.61 mm2.461 cm <br />0.0246 m <br />0.969 in <br />0.0807 ft <br />
Width 16.79 mm1.679 cm <br />0.0168 m <br />0.661 in <br />0.0551 ft <br />
Height 4.9 mm0.49 cm <br />0.0049 m <br />0.193 in <br />0.0161 ft <br />
Continuous Amps 1.3
Max Amps 2
Voltage Range
General DCC Information
Extended Addressing Yes
AnalogConversion Yes
Speed Steps 28/128
User Loadable Speed Table Yes
Back EMF Yes
Programming Modes
Decoder Assisted Consists Yes
CV Readback
Silent Running (HF) Yes
Kick Start
Momentum Yes
Function Information
# of Functions 4
Function Amps 100
# of Lighting Effects 20
# of Sound Effects
Programming Information
Programming Lock Yes
Decoder Programming Modes
Misc Items
SUSI Interface No
RailCom Yes
Transponding No
Has computer interface
Firmware Upgrade Possible No
UPC Number 879508000504


This product has replaced the TCS T1 multifunction decoder.


  • Back EMF Load Compensation: Provides superior slow speed control and high performance under load.
  • Quiet Drive: Super-quiet motor control for "buzz" free motor performance.
  • DC Mode: Decoder will automatically detect DC power. You can also configure how your lighting effects function on DC.
  • RailCom®: This feature allows the decoder to talk to the command station. RailCom supports expansion for new features.
  • Variable Momentum: Allows you to make custom acceleration and deceleration curves.
  • Incandescent Bulb Support: This decoder can be used with 12 Volt bulbs.
  • Function Remapping: Buttons 0 through 12 may be used to control the lighting functions of this decoder.
  • Programmable Lighting Effects: Choose from 20 separate user-programmable lighting effects!
  • Dimmable Brightness: Configure multiple different brightness levels for your LED's or incandescent bulbs.
  • Decoder Lock: Feature which prevents accidental/unwanted programming while activated.
  • Airwire™ Compatible: Fully compatible with Airwire™ operation.
  • User-Loadable Speed Tables: Configure custom speed curves and set speed limits.
  • Hard-wire or 9-Pin JST


  • No FAQs link to this page.

See Also

Related Train Control Systems Multifunction Decoders