TCS - Train Control Systems

TCS 1429 M4-KAC DCC Decoder - Hardwire

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TCS 1011 M4 DCC Decoder - Hardwire
The M4 is a small form factor hard-wire decoder with 4 lighting functions for HO and N scale installations. This decoder is designed for installations where space is limited.

This decoder is also available with 8-pin NMRA plugs or Keep Alive® wires factory-installed. See the "Variants" page for more options.

  • 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.
  • 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.


  • Interface Type: Hard-Wire
  • Dimensions (L x W x H): .567”x.359”x.135” or 14.4mm x 9.12mm x 3.43mm
  • Scale: HO Scale N Scale
  • Continuous/Peak: 1.0/2.0 Amp
  • Total Functions: 4
  • Function Rating: 100 mA
  • 12V Outputs: 4

Decoder Specifications:

  • Size: 0.59 x 0.37 x 0.11 Inch (15.0 x 9.3 x 2.8 mm)
  • Connection: Hardwire (Other Harness Options Available)
  • Motor Rating: 1.0 Amp Continuous, 2.0 Amp Peak
  • Functions: (4) 100mA outputs (400mA Total)
  • BEMF: Yes
  • Protocol: NMRA DCC Compliant
  • Additional Features:


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